The European tree frog, Hyla arborea, is common in the middle and south of Europe, and ranges into Asia and North Africa. The species becomes very noisy on the approach of rain and is sometimes kept in confinement as a kind of barometer.
North America has many species of the Hylidae family, including the Gray tree frog (Hyla versicolor) and the American green tree frog (H. cinerea). The spring peeper (Pseudacris crucifer) is also widespread in the eastern United States and is commonly heard on summer and spring evenings.
"Tree frog" is a popular name for several of the Hylidae. H. versicolor is the changeable tree frog, Trachycephalus lichenatus is the lichened tree frog, and Trachycephalus marmoratus is the marbled tree frog. However, the name "treefrog" is not unique to this family, also being used for many species of the Rhacophoridae.