Amazon Milk Tree Frog

Wayne and Gladys Valley Children's Zoo


In the Zoo

Scientific Information

Scientific Name: Trachycephalus resinifictrix
Class: Amphibia
Order: Anura
Family: Hylidae
Genus: Trachycephalus




Length: 2.5- 3 inches 3-4 inches

Lifestyle and Lifespan

Diet: Carnivorous
Activity Timeframe: Nocturnal
Interactivity: Social
Sexual Dimorphism: Yes
Lifespan in the Wild: 8 years
Lifespan in Captivity: 8 years

Geographic Range

Northern areas of South America(Colombia, Bolivia, Brazil, Trinidad, Tobago, French Guiana, British Guyana, Ecuador, Peru and Venezuela)


Status in the Wild: Least Concerned
Threats: Over Consumption


These frogs are light grayish in color with brown or black banding. Juveniles show stronger contrast which fades somewhat with maturity. Skin also becomes somewhat bumpy as they age.

Species Specifics

This species was previously within the genus Phrynohyas which was however synonymised with Trachycephalus after the extensive revision of the family Hylidae in the year 2005.

Physical Characteristics

This species is also sometimes called the mission golden eyed-tree frog for its golden iris, with a black Maltese cross centered on the pupil; and the boatman frog, "sapo canoeiro", because its croaks sound like oars against the side of a canoe.



Above or near slow-moving water in humid rainforest regions.


Rarely recorded, probably because of its arboreal habits.


Adults will consume almost any type of small arthropod they can overpower and swallow.

Ecological Web

This frog inhabits the canopy of tropical primary rainforest, where they breed in tree cavities and may seldom, if ever, descend to the ground It reproduces in tree cavities and it is characterized by loud vocalization.

Activity and Behavior

Activity Pattern


Social Behavior

Amazon Milk Frogs do great in groups. Overly amorous males may harass females on occasion, but Amazon Milk Frogs typically coexist peacefully in groups

Reproductive Behavior


There is no fixed reproduction period. The females will lay about 2.000 eggs in water bodies in leaves or similar water bodies in the trees The tadpoples hatch already after one day. After only three further weeks metamorphiosis is completed.




Current Threats

Over Consumption

Our Role

Oakland Zoo believes that each one of us has the power to become stewards of the natural world, decrease our global footprint and inspire others to do the same. Learn about the conservation initiatives we're pursuing at the Zoo, and find out how you can help.

How You Can Help

Fascinating Facts

Their common name milk frog refers to the poisonous, white, milky secretion that this frog secretes when threatened.


Oakland Zoo

P.O. Box 5238

9777 Golf Links Road Oakland, CA 94605