At Sydney Snake Catcher regularly get calls for Lace Monitor's in semi-rural Sydney and around bushland reserves, picnic areas and properties bordering national parks in areas live St Ives. When they do appear in a backyard, the reaction from homeowners is usually a combination of awe and mild panic. Both are reasonable!
The Lace Monitor (Varanus varius) is a large native goanna found across eastern Australia. They are second only to the Perentie (Varanus giganteus) in size among Australian monitors and are by far the largest lizard you are likely to see in the Sydney region.
The combination of size and pattern makes Lace Monitors unmistakable in the Sydney region:
The lateral compression of the tail is striking once you see it. Where most lizards have round tails, a Lace Monitor's tail is flattened side-to-side, almost blade-like — useful for swimming and as a defensive weapon.
Lace Monitors occupy a wide range of habitats, but they need space and structure to thrive:
Natural habitats:
Urban and semi-urban habitats:
They are not inner-city animals. The presence of Lace Monitors is a good indicator that a property still has access to a meaningful patch of bush.
Lace Monitors are confident, intelligent reptiles. They are scavengers and active predators, and they have learned over generations how to take advantage of human activity — particularly around picnic areas, campgrounds and rural properties where food scraps and unsecured bins offer easy meals.
When threatened, a Lace Monitor's first response is usually to head for the nearest tree. They are exceptional climbers, using those powerful limbs and sharp claws to ascend even smooth-barked trunks at impressive speed. Once up a tree, they will often stay still on the opposite side of the trunk from the perceived threat, watching with one eye and ready to move higher if needed.
If they cannot reach a tree, they may bluff:
These displays are almost always bluff. A Lace Monitor will run or climb long before it will fight. The exception is if cornered, then the claws, the bite and the tail can all do real damage.
Lace Monitors are opportunistic omnivores with a particular taste for protein:
Their willingness to scavenge is what makes them such a common sight at picnic areas. A Lace Monitor that has learned campers leave food unattended will visit the same site repeatedly, year after year. Some individuals at well-known camping spots are genuinely tame around people, though this is not a relationship anyone should encourage.
Mostly no — but with significant caveats. Lace Monitors are not venomous in the way snakes are, but they do produce mild oral venom (a feature of many monitor species, only recently discovered). The bite itself can be quite serious due to the sheer size of the animal, the strength of the jaws, and the bacterial load in the mouth — bites can cause infection and may require stitches due to their large teeth and powerful jaws.
In practice, bites are extremely rare. Lace Monitors only bite when handled, cornered or threatened directly. They have no interest in biting people who give them space.
The bigger risks are:
The straightforward rule: give them space, do not feed them, do not corner them. They are not aggressive to people who behave sensibly.
Lace Monitors have one of the most unusual breeding strategies in the Australian reptile fauna:
The termite mound nesting strategy is brilliant. The termites maintain stable temperature and humidity, defend the mound against predators that would otherwise find the eggs, and the chamber is essentially burglar-proof. The cost is that Lace Monitors need a landscape with active termite mounds large enough to accommodate a clutch — yet another reason their distribution is tied to bushland.
If you have a Lace Monitor visiting your property, you live somewhere with genuine bush access — and that is generally a privilege rather than a problem.
Practical steps:
What you should not do:
If a Lace Monitor is in a genuinely problematic location — inside an enclosed space, trapped in a garage, or persistently raiding livestock — call a licensed reptile catcher. We are licensed to handle monitors and can relocate them safely.
The Lace Monitor (Varanus varius) is Sydney's largest lizard and one of the most impressive reptiles in the region. They are still common across Zones 1 to 4, particularly in areas bordering bushland and national parks. They are intelligent scavengers and predators, generally peaceful around humans who give them space, and an important part of the ecology of Sydney's bushland fringe. The proper response to finding one in your yard is to enjoy the sight, take a photo from a respectful distance, and let the animal go on its way.
If you have ever sat by the pond in the Royal Botanic Garden, walked beside the Lane Cove River, or relaxed near a creek in Centennial Park, you have almost certainly seen an Eastern Water Dragon (Intellagama lesueurii). They are Sydney's largest native dragon, one of the most charismatic reptiles in eastern Australia, and one of the few species that has not just survived urbanisation but thrived in it.
At Sydney Snake Catcher we get regular calls about water dragons — usually from homeowners with backyard ponds, pools or water features who have suddenly acquired a one-metre-long lizard sunning itself on the deck. The good news is they are completely harmless. The better news is that having water dragons on your property is a sign that your garden is genuinely supporting native wildlife.
The Eastern Water Dragon (Intellagama lesueurii) is Australia's largest native dragon lizard, a member of the agamid family and the only species in the genus Intellagama. They are semi-aquatic by nature, equally at home in water as out of it, and one of the most successful urban reptile species in eastern Australia.
The Eastern Water Dragon is one of the most distinctive reptiles in the Sydney region. The combination of size, build and colour makes it almost impossible to confuse with anything else:
The laterally compressed tail is one of the easiest features to spot. Where most lizards have round tails, the water dragon's tail is flattened like a fish's, which makes it an excellent swimmer.
There are two other dragon species you might encounter in the Sydney region. The differences:
If a dragon is large, has a long flattened tail, and is anywhere near water, it is almost certainly an Eastern Water Dragon.
The Eastern Water Dragon is one of Sydney's great urban success stories. Their natural habitats centre around water, and they have adapted brilliantly to the human-modified version of that environment:
Natural habitats:
Urban habitats:
Some Sydney populations have become so accustomed to people that they will sit at outdoor restaurants waiting for food scraps. The water dragons at the University of Sydney, the Australian National Maritime Museum and Centennial Park are essentially semi-tame.
The Eastern Water Dragon's defining behavioural trait is its relationship with water. When threatened, they typically run for the nearest body of water, dive in and disappear. They can remain submerged for surprisingly long periods — up to 90 minutes in some cases — using a slow heart rate and reduced metabolism to stretch their oxygen supply.
This habit is why basking water dragons always sit in particular positions:
They are alert sun-baskers. Move slowly and you can often get within a few metres before they decide to leave. Move quickly and they are gone in a single splash.
Water dragons have a complex social structure that is fascinating to watch once you know what is happening:
If you have water dragons regularly visiting your garden, you are almost certainly being visited by the same individuals over and over — there will be a resident dominant male and a small group of females and juveniles using your property as part of a larger territory.
Eastern Water Dragons are opportunistic omnivores. Their diet is broad:
Juveniles tend to eat more insects and small invertebrates. Adults take a much wider range, including plant material and larger prey items.
No. Eastern Water Dragons are completely harmless to humans and pets. They have no venom, and while their bite can be painful (the jaws are strong for a lizard of this size), they almost never bite unless cornered or handled roughly. Their default response to a perceived threat is to dive into water or run for cover, not to fight.
The genuine risk is to dogs, particularly small dogs, where the size mismatch is closer. A water dragon defending itself from a small dog can deliver a serious bite or a tail whip that breaks skin. But this is the dog's problem to solve, not the dragon's — keep dogs under control around water and the issue does not arise.
Unlike water skinks, Eastern Water Dragons can usually get themselves out of swimming pools. They are strong swimmers and can climb most pool walls if there is anything to grip.
But two things to bear in mind:
The Eastern Water Dragon's reproductive cycle is tied closely to the warm season:
The need for sandy nesting soil is one of the few constraints on their urban success. Females will travel surprisingly long distances overland to find a suitable nest site, which is when many female water dragons get killed on roads.
Enjoy them. Eastern Water Dragons are one of the most rewarding native reptiles to share a property with. They are visible, charismatic, beneficial and they tolerate human presence much better than most native species.
Practical steps if you have them around:
What you should not do:
The Eastern Water Dragon (Intellagama lesueurii) is Sydney's most successful urban dragon — a large, charismatic native lizard that has adapted brilliantly to suburban parks, botanic gardens, backyard ponds and restaurant terraces. They are present across all five distribution zones in the Greater Sydney region and remain a common, harmless and genuinely welcome part of the city's wildlife. If you have water on your property and good basking sites nearby, you very likely have water dragons — and that is one of the better outcomes you can have as a Sydney homeowner.
The Eastern Bearded Dragon (Pogona barbata) — Sydney's Iconic but Vanishing Lizard
There is something quintessentially Australian about a bearded dragon basking on a sandstone outcrop or a sun-warmed fence post. The Eastern Bearded Dragon (Pogona barbata) is the species most people in eastern Australia picture when they think "lizard" — that triangular head, the spiny beard, the alert sideways glance as you walk past. For generations of Sydneysiders, they were a familiar part of the local landscape.
These days, not so much. The Eastern Bearded Dragon is one of the species we get fewer and fewer reports of in suburban Sydney. They have not adapted to urban life the way water skinks, forest skinks or diamond pythons have, and their numbers across the Greater Sydney region are visibly declining. When we do get called out to a bearded dragon, it is almost always on the western fringe of the city, in semi-rural areas where the bush still has room to breathe.
The Eastern Bearded Dragon (Pogona barbata) is one of Australia's most recognisable native lizards. A member of the agamid family (dragons), it is the largest dragon species native to the Sydney region and a close relative of the Central Bearded Dragon (Pogona vitticeps) more commonly kept as a pet.
The Eastern Bearded Dragon is one of the more distinctive reptiles in the Sydney region:
The combination of the triangular head, spiny beard and heavy build is unmistakable. Once you have seen a beardie, you will never confuse it with anything else in Sydney.
There are two other dragon species you might encounter in the Sydney region. The differences:
The Eastern Bearded Dragon's heavier build, expandable black beard and habit of basking on fence posts and rocks well away from water make it relatively easy to separate from its relatives.
The Eastern Bearded Dragon's habitat preferences are part of the reason for its decline in urban Sydney. Where Water Skinks adapt to backyard ponds and Forest Skinks settle into double-brick walls, beardies need something closer to their natural environment to thrive.
Preferred habitats:
In Sydney specifically, they persist on the western fringe of the city — semi-rural areas where housing density is lower, gardens are larger, and pockets of remnant bushland remain. They are essentially gone from the inner suburbs and most of the established residential areas.
One of the biggest pressures on Eastern Bearded Dragons in the Sydney region is traffic. On cool mornings, beardies often emerge to bask on warm bitumen — the road surface heats up faster than the surrounding bush and offers a quick way to raise body temperature.
The problem is obvious. A 60cm lizard sitting on a road during the morning commute does not have great odds. Road mortality is a significant factor in the decline of bearded dragons across the species' range, and it is one of the most visible signs of how habitat fragmentation affects them. Where there used to be continuous bushland, now there are roads cutting through every remaining patch.
The Eastern Bearded Dragon is famous for its dramatic threat display. When confronted by a predator or a rival male, the species can:
Despite the impressive display, they are not aggressive toward people. The bluff is intended for predators and rivals, not humans. If you approach a wild beardie, it will usually run for cover or climb the nearest tree or fence post long before it does any displaying.
They also use head-bobbing and arm-waving as social signals. A male claiming territory will bob his head in a stiff, vertical motion. A submissive lizard, often a female or smaller male, will respond with a slow, circular arm-wave — almost like a wave hello. It is one of the more charming reptile behaviours you can witness in the wild.
Eastern Bearded Dragons are omnivores. Their diet shifts with age and seasonal availability:
Juveniles tend to eat more insects, adults take more plant material. They are sit-and-wait foragers as much as active hunters — basking on an elevated perch, watching for movement, and dropping down to grab anything that looks promising.
No. Eastern Bearded Dragons are completely harmless to humans and pets. They have no venom, and while their bite can pinch (the jaws are strong for their size), they almost never bite unless handled roughly. The dramatic threat display is bluff. If you stand still and observe one, it will usually go about its business.
The risk runs the other way, as it does with most native reptiles. Cars, cats, dogs, habitat loss and the gradual fragmentation of bushland are all working against them. They are one of the species most likely to be missing from a Sydney garden that has them in living memory.
Eastern Bearded Dragons have a reproductive cycle that contributes to their vulnerability — they need stable, undisturbed nest sites and a long enough warm season:
The dependence on sunny, friable soil for nesting is another reason for their decline. Manicured lawns, paved gardens and dense housing developments offer almost nothing in the way of usable nesting habitat. A female beardie that cannot find a good nest site cannot reproduce successfully, and over time the local population fades.
If you have Eastern Bearded Dragons on your property in Sydney, you live in one of the lucky areas where the species still persists. Treat them as a privilege rather than a problem.
Practical steps:
What you should not do:
The Eastern Bearded Dragon is one of the species whose decline tells the story of Sydney's environmental change in microcosm. Half a century ago they were common across much of the city. Today they are confined to a few pockets on the western fringe. Habitat loss, road mortality, cats, pesticides and the slow grind of suburban densification have all worked against them.
The decline is not inevitable. Properties on the western edge of the city that retain bushland, friable soil and structural complexity still hold healthy beardie populations. With careful land management, these populations can persist. But for most of Sydney, the era of the backyard bearded dragon is largely over — and that is a loss worth acknowledging.
The Eastern Bearded Dragon (Pogona barbata) is one of Sydney's classic native reptiles, but also one of the most visibly affected by the city's growth. Once common across much of the region, they are now largely restricted to Zone 1 on the western fringe, where remnant bushland and lower housing density still support viable populations. They are harmless, charismatic, and an indicator species for the health of Sydney's outer bushland. Where they still exist, they are worth protecting — because once they are gone from an area, they rarely come back.
If you have spent any time near a creek, pond or backyard water feature in Sydney during summer, you have almost certainly seen an Eastern Water Skink (Eulamprus quoyii). They are the lizards basking on the sandstone rock beside the stream, the ones that vanish in a flash when you walk too close, and the ones that pop up around backyard ponds, drains and damp garden corners.
At Sydney Snake Catcher we get plenty of calls from homeowners who have noticed a fast moving, confident lizard near a pool or pond and want to know what it is. The answer is almost always an Eastern Water Skink — one of the most common, most visible and most successful native reptiles in the Greater Sydney region.
The Eastern Water Skink (Eulamprus quoyii) is a medium-sized native skink, one of three water skink species in the broader eastern Australian region. It is the only one of the three that thrives in the immediate Sydney area, and is by far the most commonly observed.
The Eastern Water Skink has a distinctive look that, once learned, is easy to spot:
The Eastern Water Skink is one of the great success stories of Sydney's urban reptile fauna. Their natural habitats include the obvious waterway environments — but they have adapted brilliantly to human-modified landscapes:
Natural habitats:
Urban habitats:
This adaptability is part of why they are so commonly encountered. A small water feature in a suburban garden is often enough to attract them, and once established they can persist for years.
Eastern Water Skinks are quintessential sun-baskers. On warm mornings and late afternoons, you will see them on flat rocks, concrete edges, fallen logs and brickwork — usually with quick access to water or thick cover.
Their behaviour is fast, alert and decisive. Approach one slowly and you might get to within a couple of metres before it moves. Move too quickly and it is gone — either into water with a splash or under cover in a streak of dappled brown. They are excellent swimmers and will readily dive and stay submerged for surprising periods to escape predators.
The basking is not just for show. Like all reptiles, they need to raise their body temperature for digestion, hunting and reproduction. The water-and-rock habit gives them the best of both worlds: warmth on the rock, instant escape into the water.
Eastern Water Skinks are opportunistic predators. They eat a wide range of small prey:
This dietary flexibility is another reason for their urban success. A garden with insects, a pond with worms in the damp soil around it, and the occasional moth attracted to outdoor lights provides everything a water skink needs.
Not at all. They are completely harmless to humans and pets. They have no venom, no significant defensive bite, and they actively avoid contact. If handled (which should only be done by a licensed catcher or for genuine welfare reasons), they may nip and certainly drop their tail, but they cannot hurt you in any meaningful sense.
The risk goes the other way. Cats take a heavy toll on water skinks in suburban areas. Pesticide use in gardens reduces their prey base. And many die in swimming pools — falling in and being unable to climb the smooth sides.
The Eastern Water Skink has a reproductive strategy that contributes significantly to its success:
The live-bearing strategy is an adaptation to cooler, wetter climates where eggs in soil would face higher risks of failure. By carrying developing young internally, the female can thermoregulate them through her own basking behaviour — a significant advantage in variable Sydney weather.
One issue worth flagging for Sydney homeowners with pools: Eastern Water Skinks frequently drown in backyard swimming pools. They are drawn to water for natural reasons, fall in, and cannot climb the smooth tiled or fibreglass sides.
Simple solutions:
These small interventions save significant numbers of native reptiles, frogs and small mammals every year.
Leave it alone. The Eastern Water Skink is one of the best neighbours your garden can have. They eat insects and other small invertebrates, they pose no risk to people or pets, and they are a sign of a healthy local ecosystem.
Practical steps:
What you should not do:
In practice, in the Greater Sydney region, the vast majority of water skinks you encounter will be Eastern Water Skinks. The other two species occur more often at higher elevations and further south.
The Eastern Water Skink (Eulamprus quoyii) is one of Sydney's most successful and most visible native reptiles. Common across all five distribution zones of the Greater Sydney region, adapted to both natural waterways and urban garden ponds, and genuinely beneficial to have around, they are a species worth appreciating rather than dismissing. If you have a creek, pond or even a damp corner with good cover in your Sydney garden, you almost certainly have water skinks — and that is a good sign.
Found a reptile you need identified or removed in Sydney? Sydney Snake Catcher operates 24/7 across the Greater Sydney region. We are fully licensed and insured, and we can identify and safely manage any reptile you encounter. Call 1300 599 938.
The Common Scaly-foot (Pygopus lepidopodus) — Sydney's Snake That Isn’t
The good news is that it is a completely harmless native lizard, and once you know what to look for, it is unmistakable.
The Common Scaly-foot (Pygopus lepidopodus) is a legless lizard in the family Pygopodidae, the same family as the Burton's Legless Lizard, and a group more closely related to geckos than to snakes. The scaly-foot name comes from the small flap-like remnants of hind limbs that all members of the genus Pygopus retain.
The Common Scaly-foot in the Sydney region has a fairly consistent look once you have seen a few:
The strongly keeled scales are a particularly useful feature. Run a finger lightly along a Common Scaly-foot (if a licensed catcher has one in hand) and you feel a distinct texture. The keeling catches the light and gives the animal a slightly rougher, more textured appearance than the smooth scales of an Eastern Brown Snake.
This is the question that matters. The Eastern Brown Snake is one of the most dangerous snakes in the world. Getting this identification right is genuinely important.
If you are not certain, do not approach. Photograph from a safe distance and send the image to a licensed reptile catcher for identification.
The Common Scaly-foot inhabits a fairly specific set of habitats that overlaps neatly with the suburban-bushland edge of much of Greater Sydney:
They shelter during the day in deep cover — under rocks, in leaf litter, inside the base of dense grass tussocks — and become active at dusk. This nocturnal habit is why most encounters happen at night, often when they are crossing roads or moving through open ground between cover.
The Common Scaly-foot has evolved a defensive strategy that works against most predators and unfortunately also works to terrify Sydney homeowners. When threatened, they actively mimic snakes:
This is straightforward predator deterrence. A predator that has learned that snakes are dangerous will hesitate when faced with something that looks and behaves like one. It is a clever strategy that works against birds of prey, cats and foxes. It also unfortunately means a lot of Common Scaly-foots get killed by people who genuinely believe they have a venomous snake on their property.
Unlike the Burton's Legless Lizard, which specialises in eating other lizards, the Common Scaly-foot is more of a generalist invertebrate hunter. They feed on insects, spiders, scorpions and other small invertebrates, hunting through leaf litter and at the base of vegetation at night.
The keeled scales may have evolved partly in connection with this habit — providing protection as they push through tangled grass and rough ground in search of prey.
No. Completely harmless to humans and pets. The Common Scaly-foot has no venom and no significant defensive bite. The entire snake-mimicry routine is bluff. They can be picked up and handled safely, though as with any reptile, they should be left alone unless removal is genuinely necessary.
The danger, again, runs the other way. Common Scaly-foots are killed in significant numbers by people who mistake them for Eastern Brown Snakes, and by cats. Habitat loss through suburban expansion is the other ongoing pressure on the species.
The Common Scaly-foot has a reproductive strategy typical of pygopodids:
The answer in almost every case is leave it alone. Common Scaly-foots are native, harmless and beneficial. They help control insect populations and form part of a healthy local ecosystem.
Practical steps if you encounter one:
What you should not do:
There is a well-known piece of Australian reptile book history involving the Common Scaly-foot. When Professor Rick Shine's seminal Australian Snakes: A Natural History was first published in 1991, an edition went to print with a Common Scaly-foot on the cover, proving that even the publishers can get it wrong, much to the authors horror! The error was caught, copies were pulled from shelves, and replacement editions were issued. A few escaped into the wild, and the misidentified-cover edition is now a sought-after collector's item.
Even the experts can get this one wrong. So if you have looked at a Scaly-foot and called us thinking it was a Brown Snake, you are in good company.
The Common Scaly-foot (Pygopus lepidopodus) is a harmless native lizard that has evolved to look and act like a snake, and it does that job almost too well. They are widespread across Greater Sydney, common in the right habitats, and almost always misidentified when they are encountered. Learning to recognise them — ear openings, fleshy tongue, long tail, vestigial limb flaps — is one of the most useful pieces of reptile knowledge any Sydney homeowner can have.
Found a reptile you cannot identify in Sydney? Sydney Snake Catcher operates 24/7 across the Greater Sydney region. We are fully licensed and insured, and we can identify and safely manage any reptile you encounter. Call 1300 599 938.
At Sydney Snake Catcher we get the very occasional call about these animals, especially in warmer months when they are out hunting at night and may turn up on driveways, garden paths and back patios. They are one of the most misidentified reptiles in the Sydney region and one of the most fascinating.
The Burton's Legless Lizard (Lialis burtonis) is the most widely distributed pygopodid in Australia — a member of the legless lizard family Pygopodidae, closely related to geckos. They are found across most of the continent and across all five distribution zones in the Greater Sydney region.
The defining feature is the snout. No other reptile in the Sydney region has a head quite like a Burton's. It is long, pointed and unmistakably wedge-shaped, almost beak-like in profile. Once you have seen one, you will not confuse it with anything else.
The appearance variation is one of the things that makes them difficult to identify. Two Burton's from the same patch of bushland can look like completely different species. But the snout shape is consistent and diagnostic.
The differences are clear once you know what to look for:
If you find one in your yard, the best move is to photograph it from a safe distance and send the image to a licensed reptile catcher for confirmation before doing anything else.
This species is the most widely distributed member of its family in Australia, and that range continues throughout the Greater Sydney region. They occur in essentially every environment from coastal heathland to dry sclerophyll forest, through to suburban gardens.
Common habitats include:
They are ground-dwellers and rely on cover for both ambush hunting and shelter from predators.
The Burton's Legless Lizard is one of the most specialised predators in the Australian reptile fauna. It feeds almost exclusively on other lizards, particularly skinks. The wedge-shaped snout, the vertical pupils, the flexible skull joints, all of it is adapted for one job: hunting and swallowing other reptiles.
The hunting technique is impressive. Burton's are sit-and-wait ambush predators. They lie still in leaf litter or low vegetation, often with the head raised slightly and twitched in a specific way that mimics a small insect or worm, a behaviour called caudal luring when it is done with the tail, but Burton's also use the head and body to lure prey within striking range.
When a skink approaches, the Burton's strikes with surprising speed, grips the prey behind the head, and uses its highly flexible cranial joints to swallow lizards that look impossibly large for its head. The skull bones literally rearrange during swallowing. They can take prey almost as long as themselves.
No. The Burton's Legless Lizard is completely harmless to humans and pets. They have no venom and no significant defensive behaviour. If you pick one up, the worst they will do is squirm vigorously and possibly nip — though even the nip is not painful and barely registers.
The bigger risk is to the animal, not from it. Burton's are frequently killed by people who mistake them for snakes. Cats also take a heavy toll on them, particularly in suburban areas.
Burton's Legless Lizards have a reproductive pattern well suited to the Australian climate:
The multiple-clutch strategy means a single female can produce a reasonable number of offspring across a good season, though survival to adulthood is low given how many small reptiles eat each other in the bush.
Burton's Legless Lizards are abundant across much of their range, they are common throughout Greater Sydney, prolific in parts of northern Australia. But sightings in the Sydney region are almost always the result of chance encounters rather than deliberate searching.
They are very good at being invisible. Their behaviour, colouration and habitat preferences mean that even experienced herpetologists find them difficult to locate on purpose. You are far more likely to encounter one crossing a driveway at night than by going out looking for one.
In almost every case, leave it alone. Burton's are native, harmless and beneficial and form part of a healthy garden ecosystem.
Practical steps if you encounter one:
What you should not do:
The Burton's Legless Lizard (Lialis burtonis) is one of those species that quietly proves how interesting Australian reptile diversity really is. It looks like a snake, hunts like a viper, and is built for a job no other animal in the Sydney region does. They are common across Greater Sydney but rarely seen, and almost always misidentified when they are. Knowing what one looks like — and being able to tell the difference between a Burton's and a snake — is one of the most useful pieces of reptile knowledge a Sydney homeowner can have.
Found a reptile you cannot identify in Sydney? Sydney Snake Catcher operates 24/7 across the Greater Sydney region. We are fully licensed and insured, and we can identify and safely manage any reptile you encounter. Call 1300 599 938.
At Sydney Snake Catcher we are starting to get more calls about Asian House Geckos from homeowners who have noticed an unfamiliar gecko hunting moths around their porch light.
The Asian House Gecko (Hemidactylus frenatus) is an introduced, non-native gecko species originally from South-East Asia. It has become one of the most successful invasive reptile species in the world, hitching rides on shipping containers, in cargo and in luggage. In Australia it is now firmly established across the tropical north and is steadily spreading south.
The Asian House Gecko looks markedly different from Sydney's native geckos. Where the Broad-Tailed Gecko is flat, grey and cryptic, the Asian House Gecko is slender, pale and built for vertical climbing on smooth surfaces.
The other giveaway is the call. Asian House Geckos are vocal in a way that no native Australian gecko is. The distinctive chirping or clicking sound at night is often mistaken for a cricket, but once you have heard it identified, you will never confuse it again.
The Asian House Gecko is overwhelmingly an urban species. Unlike many native geckos that need specific habitat features, the Asian House Gecko thrives wherever there are buildings, lights and warmth. In tropical regions of Australia they can number in the hundreds on a single building.
In Sydney we are seeing them in:
Their tropical origins mean they are most successful in warmer microclimates — north-facing brick walls, areas around hot water systems, and buildings that retain heat overnight. Sydney's progressively warmer summers and milder winters are making the city steadily more hospitable to them.
The chirping is unmistakable once you know it. Male Asian House Geckos make a series of short, sharp chirps in rapid succession — typically chick-chick-chick-chick-chick — used for territorial display and to attract females. They call most frequently on warm, humid nights.
They are extremely agile climbers, using specialised toe pads that work via van der Waals forces to grip even smooth glass and painted surfaces. They will often be seen hanging upside down on ceilings near outdoor lights, picking off moths and other insects as they arrive.
Part of what makes the Asian House Gecko such a successful invader is its reproductive efficiency:
The hard-shelled eggs are unusual among Australian geckos and are part of why the species transports so well — eggs survive long sea voyages tucked into cargo crevices.
The Asian House Gecko is not just an interesting newcomer. It is a genuine ecological concern. The species is highly adaptable and can outcompete native geckos for food, shelter and breeding sites. In tropical Australia, native geckos such as the Dtella (Gehyra species) have been pushed out of buildings and even some natural habitats by the sheer numbers of Asian House Geckos.
What this means for Sydney:
To humans and pets, no. They have no venom, no significant bite, and they actively avoid contact with people. They will not damage your home structurally, though their droppings can be a nuisance on walls and outdoor furniture.
The danger they pose is ecological, not physical. They are a slow-burning threat to Australia's native gecko fauna, particularly in the species' current expansion zone.
This is one of the few reptile species in Sydney where active removal is genuinely worth considering. If you find Asian House Geckos around your home and you are south of their established range, removing them helps slow the spread.
Practical steps:
What you should not do:
The simple visual test: native Sydney geckos are typically darker, more cryptically patterned, and lack the pinkish-pale base colour of the Asian House Gecko. The Broad-Tailed Gecko (Phyllurus platurus) is flattened and grey. The Asian House Gecko is slender and pale, with toe pads designed for smooth surfaces. And of course, no native Sydney gecko makes that chirping call.
If in doubt, photograph it and send it to a licensed reptile catcher or the Australian Museum for identification before taking any action.
The Asian House Gecko (Hemidactylus frenatus) is the global gecko equivalent of the cane toad — a successful invader that has spread further and faster than anyone expected. Its arrival in Sydney is a sign of broader environmental change, and a reminder that the city's reptile fauna is not static. Identifying it correctly is the first step in deciding what, if anything, to do about it.
Need a reptile identified or removed in Sydney? Sydney Snake Catcher operates 24/7 across the Greater Sydney region. We are fully licensed and insured, and we can identify and manage both native and introduced reptiles. Call 1300 599 938.
The Blotched Blue-tongued Lizard (Tiliqua nigrolutea) — Sydney's Highland Blue-Tongue
At Sydney Snake Catcher we get fewer Blotched Blue-tongue calls than we do for their better-known cousin the Eastern Blue-tongued Lizard, simply because they occupy a more restricted range within the Greater Sydney region. But for residents of the Blue Mountains and the higher country to the south and west of the city, the Blotched Blue-tongue is a familiar and very welcome part of the local wildlife.
The Blotched Blue-tongued Lizard (Tiliqua nigrolutea) is one of six species of blue-tongued lizard found in Australia. Unlike the Eastern Blue-tongue, which is widespread across lowland eastern Australia, the Blotched Blue-tongue is a specialist of cooler, higher-altitude habitats — found across Tasmania, Victoria, and the higher country of New South Wales.
The Blotched Blue-tongue is one of the more visually distinctive lizards in the Sydney region:
The combination of dark base colour and large pale blotches is unmistakable. Unlike the banded pattern of the Eastern Blue-tongued Lizard, the Blotched Blue-tongue's markings are exactly what the name suggests — distinct blotches rather than crossbands.
The Blotched Blue-tongue can be confused with the Eastern Blue-tongued Lizard, but the differences are clear:
If you are in the Blue Mountains, the Southern Highlands or other elevated parts of the Greater Sydney region and you have a blue-tongue with blotchy rather than banded markings, you almost certainly have a Blotched Blue-tongue.
The Blotched Blue-tongue's range within the Greater Sydney region is limited to higher-elevation and cooler environments:
Natural habitats:
Urban and semi-urban habitats:
For Sydney residents, the species is essentially restricted to Zone 4 — the higher country to the west and southwest of the city, including the Blue Mountains, the Upper Blue Mountains, and the country leading down toward the Southern Highlands.
Blotched Blue-tongues, like all members of the genus Tiliqua, are best known for their dramatic defensive display. When threatened, they:
The blue tongue itself is the key. Most predators have never seen a colour like that on a small animal, and the sudden flash of blue is enough to make many predators pause — particularly dogs, foxes and birds of prey. The display is almost always bluff. Blotched Blue-tongues rarely bite unless physically handled.
In Sydney's highland gardens, the display is most often seen when:
Blotched Blue-tongues are omnivores with a slow, methodical foraging style. Their diet includes:
The taste for snails and slugs makes them genuinely beneficial in cool-climate gardens, where these pests can be a significant problem. A resident Blotched Blue-tongue is a quiet, ongoing solution to slug damage in lettuce beds and other soft-leaved plants.
No. Blotched Blue-tongues are completely harmless to humans and pets. They have no venom and pose no significant threat through their bite — though if cornered and handled they can deliver a surprisingly strong pinch with their powerful jaws. Even then, the bite is not dangerous.
The genuine risks run the other way. Blotched Blue-tongues face significant threats from:
The snail bait issue is worth flagging specifically. Metaldehyde-based snail baits are highly toxic to blue-tongues, and lizards that eat poisoned snails are often killed themselves. If you have blue-tongues on your property, switching to iron-phosphate based snail baits (or simply tolerating some slug damage) protects them.
Blotched Blue-tongues have a reproductive strategy suited to cooler climates:
The live-bearing strategy is shared with all Australian Tiliqua species and is thought to be an adaptation to cooler climates. By carrying developing young internally, the female can use her own basking behaviour to thermoregulate them — a significant advantage in the cool conditions of the highlands.
The long lifespan means that a Blotched Blue-tongue you encounter in your garden may have been there for years and may continue to be there for years more. They are not transient visitors — they are residents.
Leave it alone. Blotched Blue-tongues are protected native wildlife, completely harmless and genuinely beneficial — particularly in cool-climate gardens where slug and snail control matters.
Practical steps:
What you should not do:
If you live in a cool-climate part of the Greater Sydney region and you want to encourage Blotched Blue-tongues on your property:
A resident Blotched Blue-tongue is one of the better neighbours a highland gardener can have. They are quiet, beneficial, charismatic and a living link to the cool-climate ecology that defines the Blue Mountains and the Southern Highlands.
The Blotched Blue-tongued Lizard (Tiliqua nigrolutea) is Sydney's highland blue-tongue — a large, dramatic, slow-moving native lizard found in the cooler and higher parts of the Greater Sydney region, particularly the Blue Mountains. They are distinguished from the more common Eastern Blue-tongue by their blotchy rather than banded pattern, and by their preference for elevated, cool-climate habitat. Completely harmless to humans, genuinely beneficial in the garden, and long-lived enough to become a familiar resident over many years, they are one of the species that makes Sydney's highland gardens worth living in. If you have one, treat it as a privilege rather than a problem.
Found a blue-tongue or another reptile at your home? Sydney Snake Catcher operates 24/7 across the Greater Sydney region. We are fully licensed and insured, and we can identify and safely manage any reptile you encounter. Call 1300 599 938.
The Eastern Blue-tongue Lizard (Tiliqua scincoides scincoides) — Sydney's Iconic Backyard Lizard
If there is one native reptile that defines suburban Sydney, it is the Eastern Blue-tongue Lizard (Tiliqua scincoides scincoides). Generations of Sydney kids have grown up turning over a piece of corrugated iron in the back shed and finding one curled up underneath, or watching one trundle across the lawn on a warm afternoon, blue tongue flicking in and out. They are familiar, charismatic, completely harmless and one of the best garden residents a Sydney homeowner can have.
At Sydney Snake Catcher we get more calls about Eastern Blue-tongues than just about any other lizard species. They turn up in garages, under hedges, in compost heaps and basking on driveways across every suburb in the city. The good news is almost always the same: leave them alone, they will not hurt you, and your garden is genuinely better for having them around.
The Eastern Blue-tongue Lizard (Tiliqua scincoides scincoides) is the most familiar and widely distributed of Australia's six blue-tongue species. They are large skinks — among the largest in the world — and one of the most successful urban adapters in the Australian reptile fauna.
The Eastern Blue-tongue is one of the easiest reptiles to identify in the Sydney region:
The combination of banded back pattern, dark eye-stripe and bright blue tongue makes identification straightforward. Once you have seen one, you will recognise the next one immediately.
The Eastern Blue-tongue can be confused with a couple of related species:
Within the suburban Sydney area at low to moderate elevation, almost every blue-tongue you encounter will be an Eastern Blue-tongue. The Blotched Blue-tongue is restricted to highland areas, and the Pink-tongued Skink is uncommon and habitat-specific.
The Eastern Blue-tongue is one of Sydney's great urban success stories. Their habitat preferences map almost perfectly onto the kinds of features found in older suburban gardens:
Natural habitats:
Urban habitats:
The species' adaptability is what makes it so successful. An Eastern Blue-tongue needs cover for shelter, sun for basking, and food in the form of insects, snails, slugs and soft plant material. A typical established Sydney garden provides all three.
Eastern Blue-tongues are slow-moving and generally placid. They rely on bluff rather than flight or fight when threatened. The defensive display is one of the most distinctive in the Australian reptile fauna:
The blue tongue itself is the key to the display. Recent research has shown that the underside of a blue-tongue's tongue reflects strongly in the ultraviolet spectrum — invisible to most mammalian predators but highly visible to birds and reptiles. The display is essentially an aposematic warning: "I am unusual, I am unexpected, and you should think twice before continuing."
The display is almost always pure bluff. An Eastern Blue-tongue will not chase you, will not pursue your dog, and only bites if physically picked up. Even then, the bite is more of a powerful pinch than a true bite — there are no fangs and no venom.
Eastern Blue-tongues are slow-moving, methodical omnivores. Their diet is broad and beneficial from a gardener's perspective:
The taste for snails and slugs is one of the main reasons blue-tongues are such welcome garden residents. A resident blue-tongue can quietly remove thousands of garden pests over a season. They also clean up fallen soft fruit and other organic debris.
The downside of their adaptability is that they will readily eat unsuitable foods. Pet food left outside, dropped scraps and even some commercial baits can be harmful. Keep pet food bowls inside and avoid leaving food waste accessible.
No. Completely harmless to humans and pets. Eastern Blue-tongues have no venom, and while their jaws are strong enough to deliver a painful pinch if they are picked up, they cannot do any real damage. The dramatic display is bluff. In thousands of call-outs we have never had a serious incident from an Eastern Blue-tongue defending itself.
The genuine risks all run the other way. Eastern Blue-tongues face significant threats:
The snail bait issue is the most fixable. If you have blue-tongues in your garden, switch to iron-phosphate based snail baits, which are safe for reptiles. The slight reduction in slug control is a small price to pay for keeping your blue-tongues alive.
Eastern Blue-tongues have a reproductive strategy that contributes to their longevity:
The long lifespan is worth emphasising. A blue-tongue you see in your garden today may have been resident for a decade or more, and may continue to live there for another decade. They are not transient visitors — they are long-term residents with established home ranges of roughly a quarter of a hectare.
This is part of why relocation is such a bad idea. A blue-tongue moved even a few suburbs away has lost its entire territorial knowledge — where to find food, water, basking sites, shelter, mates. Most relocated blue-tongues die within a few months.
Leave it alone. The Eastern Blue-tongue is the best lizard a Sydney garden can have — beautiful, beneficial, completely harmless and a sign of a healthy garden ecosystem.
Practical steps:
What you should not do:
If you want to encourage blue-tongues in your Sydney garden:
A resident Eastern Blue-tongue is one of the best things a Sydney garden can have. They are quiet, beneficial, charismatic and a living reminder that even densely settled suburbs can support meaningful native wildlife when given a bit of habitat structure.
The Eastern Blue-tongued Lizard (Tiliqua scincoides scincoides) is Sydney's quintessential backyard reptile — large, charismatic, completely harmless and one of the most beneficial wildlife species a suburban garden can host. They are present across all five distribution zones of the Greater Sydney region, thriving in environments from coastal heath to highland forest to dense suburban housing. If you have one in your garden, you are doing something right ecologically. Protect them from dogs, switch your snail bait if you use it, watch out for them on the driveway, and otherwise let them get on with the long, slow, useful business of being a blue-tongue.
Found a blue-tongue or another reptile at your home? Sydney Snake Catcher operates 24/7 across the Greater Sydney region. We are fully licensed and insured, and we can identify and safely manage any reptile you encounter. Call 1300 599 938.
