The
Pacific Treefrog can change colour rapidly from light to dark, possibly in response to changes in temperature and humidity
The distinctive call of the Pacific Treefrog (especially the mating choruses) is widely used in films for a "tropical" background. Cartoon frogs are often given a Pacific Treefrog voice as well!
Pacific Treefrogs can throw their voices to some extent, making it quite difficult to close in on a frog by following its call