Amazon Milk Tree Frog

[Phrynohyas resinifictrix]

The Amazon Milk Frog is rather large for a tree frog. It is about 2.5 inches in length. Its body is light blue, blue-green or gray with black and brown banding covered with white and dark spots and bumps. As juveniles their patterning is more contrasting and then fades some with age. The given name "milk frog" comes from a white substance they secrete through the skin when threatened. This substance is poisonous to potential predators.

Location: The RainForest Amphibian Exhibits



The range of the Amazon Milk Frog is the Northern Amazon region of South America (Colombia, Ecuador, Brazil, Bolivia, Peru, Venezuela)


The habitat of the Amazon Milk Frog is the humid rain-forest canopy, near slow-moving streams.

Conservation Status
Least Concern
Primary Threats


Tadpoles hatch in one day. The larval stage is approximately three weeks.


Clutch size: 2,000 eggs


The Amazon Milk Frog is nocturnal and lives in the rain-forest canopy. They often breed in tree cavities and seldom descend to the ground.


Breeding in Amazon Milk Frogs takes place between November and May (the rainy season). The male frog externally fertilizes a clutch of about 2,000 eggs in a gelatinous mass floating in water. The egg mass may also be deposited in water trapped in a tree cavity or in the centers of bromeliads. Eggs hatch in about one day, and metamorphosis from tadpole to juvenile adult takes about three weeks.

Wild Diet

Medium-sized insects and other arthropods and invertebrates

Zoo Diet

Live crickets and appropriately sized food items 3x weekly