A tree frog is any frog that spends a major portion of its lifespan in trees, known as an arboreal state. Several 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 in one biome where one group of tree frogs occurs, the other is almost always absent. The last common ancestor of some such tree frog groups lived long before the extinction of the dinosaurs.
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Famous quotes containing the words tree and/or frog:
“There is something singularly grand and impressive in the sound of a tree falling in a perfectly calm night like this, as if the agencies which overthrow it did not need to be excited, but worked with a subtle, deliberate, and conscious force, like a boa-constrictor, and more effectively then than even in a windy day.”
—Henry David Thoreau (1817–1862)
“A frog in love would not be enchanted to learn that her beloved had turned into Prince Charming.”
—Mason Cooley (b. 1927)