Ranid frogs form a nearly cosmopolitan   family containing roughly 1,000 species, i.e., about one-fifth of all living   Amphibia. Specific morphological characters within this family have led to   the taxonomic recognition of subfamilies such as Ranixalinae (with adults   adapted to life in streams or on rocks, and torrential or semiterrestrial   larvae), Mantellinae (a diverse group of arboreal and torrential Madagascan   frogs), Rhacophorinae (tree frogs), and Tomopterninae (burrowing frogs).

蛙科动物组成了一个近乎世界性的大科，大约有1000种，相当于全部两栖动物的大约五分之一。该科的特殊形态特征促成亚科建立，如Ranixalinae（成体适应于溪流或岩石上的生活，幼体适于湍流或半陆生生活）、Mantellinae（一组物种多样的树栖和湍流生活的马达加斯加蛙类）、Rhacophorinae（树蛙类）和Tomopterninae（穴居蛙类）。