Lizards vary in appearance from species to species; however, almost all types share common characteristics such as dry, scaly skin, four legs, external earholes, and eyelids that cover their eyeballs. Lizards also possess a rather unique feature known as autotomy, which is the ability to survive the severing of their tails in order to escape when attacked by a predator. Their tails then grow back after a period of several weeks.
Mediterranean house geckos are small creatures with mottled patches of light brown coloring across their scales, while common house geckos are somewhat more vivid, sporting a marbled coloring of pink or gray and white undersides. Green and brown anoles are similar in size to house geckos, with narrow snouts, long tails, and pink flaps of skin under their chins. Western fence lizards are medium-sized lizards featuring camouflaged patterns of gray, brown, and black, and have spiny scales that help them blend in with their environments. Green iguanas are large, green lizards with stout yet agile bodies, green flaps of skin beneath their chins, short spikes along their spines, and long, whip-like tails.