A lizard can live without food varies from species to species. Adult bearded dragons can survive for up to three weeks without eating, while adult leopard geckos can live for over a month without eating. It also depends on whether the lizard is an adult or a baby.
The various different types of lizards include anoles, chameleons, geckos, American legless lizards, monitor lizards, agamids, iguanas and earless lizards. Lizards belong to the class Reptilia and order Squamata. There are approximately 5,000 lizard species found in the order Squamata.
Lizards are distributed throughout the world, and as the San Diego Zoo notes, most of them live on the ground. Other common lizard dwelling places are underground burrows (especially in deserts), under rocks, marshy bogs and in trees.
The average lifespan of a lizard usually runs between one and 30 years, with a median of 10 years. Because there are over 5,000 different species of lizards, the lifespan varies from species to species.
Most lizards are omnivores, however, what a lizard eats is largely influenced by its size. With over 3,800 different species of lizard, there is no set diet between them.
Common lizards feed on insects, such as flies, grasshoppers and spiders, according to the Surrey Amphibian and Reptile Group. They also eat invertebrates, including earthworms, small snails and centipedes.
Small lizards can be carnivorous, herbivorous or omnivorous. Small lizards may eat a variety of insects, plants or a mixture of the two. Most lizards have a high metabolic rate and need to eat several times a week.
The most effective method of keeping lizards away is to make the area less hospitable. Commercially available chemical and electric repellents sometimes work, but these are potentially harmful to children and pets.
The lizard has a wide variety of predators, including birds, snakes and even other lizards. When being chased or attacked by predators, lizards may swell up, hiss, break off their tails to escape or even change colors to blend in with their surroundings.
Most species of lizard are quadrupedal and crawl using their four limbs and tail. Certain species are legless and slither like snakes. Some lizards, such as geckos, can adhere to vertical or inverted surfaces and move freely on them.