A tree frog is any type of frog that is arboreal by nature. Several unrelated lineages of frogs among the Neobatrachia have given rise to tree frogs, even though they are not closely related to each other. Many millions of years of convergent evolution have resulted in almost identical morphology and ecologies. In fact, they are so similar as regards their ecological niche that where one group of tree frogs occurs, the other is almost always absent. The last common ancestor of the tree frog groups lived long before the extinction of the dinosaurs.

Tree frogs are members of the following families:

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