Royal tree frog

Body length 2.5-5 cm. The color of the back can be different: green, brownish, reddish, gray, brown or black. There is a dark triangular spot on the head, dark brown or black stripes near the eyes. Color also depends on the color phase and can change quickly from dark to light. The belly is whitish or creamy, as is the underside of the legs. Males of this species have a yellow throat. The membranes between the fingers are small, and the fingers themselves have small pads. The skin is smooth.

Royal tree frog is common on the Pacific coast of Oregon and Washington, but is also found from extreme northern California to British Columbia. A small population also exists in the pond on Revilyahihedo Island near the town of Ketchikan in Alaska, being deliberately introduced there in the 1960s ^[3] . Tree frogs live in ponds, streams, lakes, and sometimes even further from the water. Their habitat includes a wide range of climate and vegetation from sea level to high altitudes.

Mating occurs from the beginning of winter to early spring. Females lay eggs in clumps of 10-90 eggs, usually in small standing reservoirs on and under vegetation and fallen leaves. Tadpoles hatch after one to three weeks, feed on periphyton , filamentous and diatoms and plant pollen in the thickness or on the surface of the water. Metamorphosis usually lasts about 2-2.5 months.

During the final stage of transformation, when the tadpoles have four limbs and a tail, they do not feed for a short time, as their mouths become wider, and the digestive system changes from a herbivore to a carnivorous mode of nutrition.

Tree frog leads a nocturnal lifestyle, most of the time hiding under rotten logs, stones, tall grass and fallen leaves, where it is difficult to see if it does not move. Most of the diet consists of spiders , beetles , flies , ants and other insects and arthropods .

Life expectancy in captivity is up to 9 years.