The Different Types of Lizards

The lizard is one of the most widely distributed groups of squamate reptiles in the world, with over 7,000 species. Its range includes most oceanic islands and all continents except Antarctica. The following sections describe the common lizard, the Caiman, the Iguanian gloss lizard, and the Autarchic gloss lizard.


Common lizards

Common lizards are not only fascinating to look at, but are also great pets. These reptiles come from different of the world. In the Eurasian region, they are also called viviparous lizards because they give birth to live young. In fact, this type of lizard can live farther north than other nonmarine reptiles.

Female common lizards give birth to three to 10 young in late summer. Their young are born wrapped in a membrane, which they immediately eat. Their young do not need the mother’s care, and their development is independent. They hunt invertebrates for food, but do not rely on their mother.

Common lizards feed on small invertebrates and insects. They use their excellent sense of hearing and eyesight to detect their prey. They also use their forked tongue to pick up scent particles in the air. They hunt in moist areas and enter water bodies to catch their prey.

Caiman lizards

Caiman lizards are members of the family Dracaena. They are lizards found in South America. Their habitats include marshes, streams, and flooded forests. Their distinctive orange skin and sharp teeth make them a dangerous predator. If you encounter a caiman, don’t try to catch it!

Caimans reproduce sexually, laying five to seven fertilized eggs in each clutch. The eggs are laid in holes in the riverbank and covered in vegetation. The young hatch after three to seven days. Caimans are semi-aquatic, so they need a high-quality water supply. If you suspect your caiman is suffering from an infection, you may notice redness or a bulging eye. Infected caimans may also rub their ears.

Caiman lizards prefer to eat aquatic snails, but they will also eat other items. Canned reptile snails and Tegu food, as well as fruits and vegetables, will help them get the nutrients they need.

Iguanian gloss lizards

In the lizard family Liolaemus, viviparity has been found in several species of Iguanian gloss lizards. The transition from oviparity to viviparity is believed to have occurred during the gradual cooling of the Eocene. However, for some species, the transition to viviparity may have occurred prior to the glaciations.

This shift in social behavior resulted from a development of a voreronasal system. The autarchoglossans were able to develop a system of sequential polygyny, which allows them to guard multiple females simultaneously as they move through their territories. Their social behavior evolved to reflect the new system, with autarchoglossans being more active, alert, and possessing higher body temperatures.

The evolution of viviparity has influenced the morphology of these reptiles, and researchers have hypothesized that nest-site defense may have been a remnant of this ancient behavior. The absence of observations of nest-site defense could also be due to the lack of time for snakes to detect the eggs. In addition, researchers have used this lizard species to test the feasibility of using game-theoretic models to explain the evolution of alternative colour/behaviour morphs and the outcome of dyadic aggressive contests.

Autarchic gloss lizards

Iguanas use a system of visual cues to detect prey and dash to catch it. They also use a long tongue to capture their prey. But unlike iguanas, autarchic gloss lizards actively search for their prey, wriggling and probing the ground until they find what they’re looking for.

Beaded lizards

Heloderma is a genus of toxicoferan lizards with five species. It is the only extant genus in the family Helodermatidae. These animals are toxic to humans and other animals. The name comes from the beaded appearance of their shells.

Beaded lizards are endangered by over-collection and habitat loss, and their wild population is less than 200. They were first described in 1829 by Arend Wiegmann. They were originally known as Trachyderma horridum, but he changed the name six months later. Heloderma horridum is Latin for “rough”. While the Chiapan beaded lizard is entirely black, its Guatemalan counterpart is gray or brown in color.

Beaded lizards have a venom gland in their lower jaw, so they bite hard to trigger the venom duct, which spreads the venom throughout the wound. The venom is a hemotoxin, which targets red blood cells and damages tissue. The poison can lead to respiratory failure or even death. It can also cause swelling, vomiting, and loss of bodily functions. The most severe ramifications of beaded lizard bites are the loss of respiratory function, edema, and bleeding.