Chameleon (scientific name: to Chamaeleonidae) (English: Chameleon), commonly known as chameleon, Sauria (Sauria) Chamaeleonidae Chamaeleontidae reptiles production in the eastern hemisphere, mainly arboreal. The characteristics of body can change. Every 2 to 3 toe and two groups of the toe, end of the tooth, the tongue can be extended. Agamidae (Iguanidae) anole (anole) produced in the Western Hemisphere, also known as false chameleon. True chameleons two genera: Brookesia genera (19 species), chameleon (Chamaeleo, 70). About half of these species are distributed only in Madagascar, most of which are in sub Saharan Africa. Two kinds of distribution in Western Asia; a in southern India and Sri Lanka; another (the common chameleon (Chamaeleo chamaeleon]) distribution in the near east to the west across North Africa of area of the south of Spain. Northeastern Madagascar Hala chameleon in the island's tropical rain forest from the tip of the nose to tail length of 29 mm. Adult body length only the size of a fingernail, may is by far the world's smallest chameleon

避役（学名：Chamaeleonidae)(英语：chameleon）俗称变色龙，蜥蜴亚目(Sauria)避役科(Chamaeleontidae)爬虫类，产于东半球，主要树栖。特征为体色能变化。每2～3趾并合为二组对趾、端生牙，舌细长可伸展。鬣蜥科(Iguanidae)的安乐蜥(anole)产于西半球，亦称为假避役。真避役有两属︰Brookesia属(19种)，避役属(Chamaeleo,70种)。其中约有一半的种仅分布在马达加斯加，其他大部分分布在撒哈拉以南的非洲。2种分布在亚洲西部；1种在印度南方和斯里兰卡；另一种(普通避役〔Chamaeleo chamaeleon〕)分布在近东向西穿过北非达西班牙南部一带。马达加斯加东北部哈拉岛的热带雨林里的变色龙从鼻尖到尾部总长29毫米，成年后的躯干长度仅有指甲盖大小，可能是迄今为止世界上最小的变色龙