Lizards belong to the submarine of reptiles. Are ancient animals and exist on the planet millions of years. They are very similar to snakes, but unlike them have limbs.
Lizards are coldblooded, the temperature of their body is equal to the ambient temperature. Therefore, they are common in latitudes with a warm climate. Depending on their habitats, their food behavior is formed. They can be omnivorous, herbivorous or carnivorous. Among carnivores there are many poisonous species that are dangerous for other animals, including humans. Poisonous lizards are found in families of nucleus, iguanshaped and Varanians.
Vyaltica (Arizonian nucleusob)
Ceiling a poisonous lizard from the nucleus family. One of the two representatives of his only kind. The lizard has a rounded body about 60 cm long, a round flattened head and a 15-centimeter tail. The coloring of a scaly body warns of its poisonous nature: bright red-yellow or red-orange spots on a dark background.
The poison in the body of reptiles produces salivary glands, along the ducts of which it is directed into the oral cavity near the teeth. The poison is transmitted through the bite. Poisoning is characterized by pain, edema, dizziness, weakness. Is not fatal, it is important to prevent secondary infection.
Vesting is found in the south-west of the United States and the northwest of Mexico.
Escorpion (Yadozub Mexican)
Mexican Yadozub is the second representative of the nucleuine family. In length reaches up to 90 cm. The mass can be about 4.5 kg. Has a long tail in which fatty tissue reserves are concentrated. The color of the body is darker in comparison with the vesting, there are strips and spots of yellow-orange tones. Sometimes black specimens are found. Poison is also produced by salivary glands.
Leads a night lifestyle, in the afternoon sits in the burrows. Prefers rocky terrain and dried river channels. This species lives in the west and southwest of Mexico, also inhabits Guatemala.
Escorpion is in the Red Book of the International Union of Nature Protection.
Komodsky Varan (Giant Indonesian Varan, Komodsky Dragon)
Komodsky Varan is a representative of the Varanov family. It is considered the largest lizard of all known. The body length is on average 2.5 m, and the mass is 35-59 kg. The body of a boar of dark brown color with interspersed of small yellow spots.
Varana is predators and, depending on age and size, eat both insects and cattle into food. The salivary glands of the lower jaw produce poison. However, it is not proven that he is the main weapon of Varan in the murder of his victims. Varan inflicts wounds on the neck, stomach and limbs with sharp teeth.
The Komodsky Varan lives on the islands of Indonesia: Komodo, Gili-Mutang, Flores, Rincha.
Nile Varan
Nile Varan is another lizard of the Varanov family. They have pronounced sexual dimorphism. Males are very large and on average have a body length 160 cm, weight 7-8 kg. Females are much less compared to them: about 135 cm long, the mass has about 3 kg. Their bodies have brown-gray, in some places greenish, coloring with yellow spots.
By the type of nutrition are predators, have large and sharp teeth and claws. They feed on insects, eggs of birds and crocodiles, small lizards, fish, young crocodiles.
Nile Varan are widespread throughout the African continent with the exception of deserted regions. They hold closer to reservoirs and feel great in water.
Conclusion
All lizards whose modified salivary glands are able to produce poison use it only in cases of protection and production of food. Having bitten, the lizard does not immediately unclench the jaw. It gives toxic substances to get into the victim’s body, flowing through the gutters of the teeth. The poisonous advantage makes it possible to repentant to hunt for very large prey.
No matter how dangerous the poisonous lizards may be, there are many hunters on them too. People exterminate them for the sake of meat and skins. Now this problem is not as acute as in the past, but now some species on the verge of disappearance are under guard.
