When threatened, Amazon milk frogs secrete a white, milky, slightly toxic substance that repels predators. This milky secretion gives these large tree frogs their name.
The frog is rather large for a tree frog, 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 Zoo is protecting amphibians in partnership with Amphibian Ark.
The Amazon milk frog spends its entire life cycle in the canopy of the rain forest. They begin their life as tadpoles hatching in water-filled holes in trees.
The frog is nocturnal and lives in the rain-forest canopy. They often breed in tree cavities and seldom descend to the ground.
Breeding 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.