More recently, they have been also collected for the international pet trade. Water monitor lizards have forked tongues to assist their senses, big claws, â¦ venom production and delivery), they are not in themselves conclusive evidence. Similarly, if a toxin causes a slow death during which the intended prey item can escape beyond the reaches of the venomous predator, or during which the predator can more easily subdue it by other means, it might not have an effect that is selectable for usage as a toxin. This diversity of habitat specialisation leads to diversity in the prey items typically consumed by monitor lizard species. "If you were a five or 10 gram mouse it would be different, but the venom from a monitor lizard is â¦ This is markedly different from the biological reality in which a substance not only has to enter the system of the target organism at a high enough concentration (so the amount of the substance in the spit matters), but has to maintain that “high enough” concentration until it reaches its target, despite the potential of bumping into literally every other molecule that is in the organism. As we pointed out, their victims die not because of blood poisoning but because of fast blood loss - enhanced by the venom - and occasional infections due to other reasons, such as running to dirty water to take shelter. does something in an in vitro assay. They also adopt different foraging strategies, although ambush-hunting is common among species that feed on other vertebrates, and many species scavenge frequently. Beyond the danger to the skin, bone, and surrounding tissue, monitor lizard bites are also poisonous, reâ¦ Monitor lizards are some of the worldâs biggest lizards; Thailandâs monitors can grow up to around two metres (6.5 foot) long and weigh up to 50 kilograms (110 pounds). This is a remarkable new discovery in the recent years as it can help scientists find out about the relationship between snakes and lizards. The Komodo dragon can be found in five volcanic islands in South-East Indonesia: Flores, Gili Motang, Komodo, Padar and Rinca. However, Komodo dragon venom is unlike cobra venom, which can kill prey in a matter of minutes. The reason many people who study the ecology and behaviour of monitor lizards doubt that they are “venomous” is that they typically predate upon animals much smaller than themselves which they quickly overpower or eviscerate (literally) with their sharp (and sometimes serrated) teeth. As the name suggests, these lizards spend much of their time in trees. Monitor lizards are quickly becoming popular for people seeking an exotic pet species. Photo: Matt Summerville. This week, we’re going to court controversy once again by asking whether or not monitor lizards (goannas) are venomous. They forage and hunt for lizards, snakes, insects, birds and eggs and even small mammals, and they often dig them out of their shelters and nests. In Sri Lanka, the water monitor (Kabaragoya) is considered venomous and dangerous when confronted, while the Bengal monitor (Thalagoya) is considered harmless and rather defenseless. Stay with us at AnimalWised and find out! A published case report blaming a death on a bite from a Bengal monitor (Varanus bengalensis) in India has been widely and appropriately criticised by clinical toxinologists. Click to attach a photo related to your comment. So, are Komodo dragons venomous? Are monitor lizards venomous? However, their bite isnât fatal to humans. One of the most plausible roles for "venom" in monitor lizards is defence against such predation attempts. A hatchling heath monitor (Varanus rosenbergi) emerging from a termite mound near Sydney. Although there is a common belief that toxic bacteria in the Komodo dragon's mouth are the reason prey become incapacitated and die, and that therefore they kill through blood poisoning, this theory has been discredited. Many species are specialised inhabitants of particular environments, however, such as this rusty monitor (Varanus semiremex) in the mangroves. The beautiful Kimberley rock monitor (Varanus glauerti) is one of several rock-dwelling species of monitor lizard found in northern Australia. Toxic activities established in the laboratory are sometimes referred to as “functions”, but this is inaccurate in a biological context. As usual, this difference of opinion is mostly a good thing, because it stimulates further research. 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