They occur in shades of greens or browns and can change colors over periods of hours and weeks.

Sources such as iNaturalist do not adhere to the revised classification, and treat all three species as a single taxon.

[9] A small population also exists in a pond on Revillagigedo Island near Ketchikan, Alaska, having been intentionally introduced there in the 1960s.

[10] They are found upland in ponds, streams, lakes and sometimes even further away from water; their habitat includes a wide variety of climate and vegetation from sea level to high altitudes.

The Pacific tree frog makes its home in riparian habitat, as well as woodlands, grassland, chaparral, pasture land, and even urban areas including back yard ponds.

Since these frogs are so widespread geographically, their breeding season is thought to be determined by local conditions.

The females lay their eggs in clumps of 10–90, and usually put them on and under vegetation and leaf litter in the pond.

The tadpoles feed on periphyton, filamentous algae, diatoms, and pollen in or on the surface of the water.

During the final stages of transformation when the tadpoles have four limbs and a tail, they stop feeding for a short time while their mouths widen and their digestive systems adjust from herbivorous to carnivorous.

Pacific tree frogs are mostly nocturnal, but occasionally they can be seen moving and heard calling during the day.

These frogs spend a lot of time hiding under rotten logs, rocks, long grasses, and leaf litter, where they are very difficult to see unless they move.

Predators include snakes, raccoons, herons, egrets, and other small mammals and reptiles.

When they sense potential food nearby, they commonly twitch a toe to attract it to within easy reach of their tongues.

Males also produce a "dry land call", a long cre-ee-ee-eeek, that can be heard anytime in the year except during the coldest and driest periods.

One is housed at the Humboldt State University Natural History Museum in Arcata, California.

[1] This mutation might inhibit the xanthophores' ability to produce yellow pigments, thus the normally green frog (possibly of the color-unchanging type) appears blue.