Lizards are reptiles belonging to the family Varanidae in the order Scorpaeniformes. Lizards are distributed on all land except for Antarctica and a few Arctic regions. Lizards have a relatively fixed living environment, with only a few living in high mountains or water. There are approximately 5461 species of lizards in the world, which are one of the most charming reptiles due to their diverse body color, appearance, and obedience. Many species are kept as pets. Modern genetic research has shown that lizards and snakes are a group, with snakes evolving from lizards. Lizards have a snake like body, thin scales, are four or five inches long, and have four limbs, hence they are also known as "four legged snakes".