The name milk frog refers to a white, milky liquid that they can secrete from their body when they feel threatened. This liquid is poisonous and works as a useful defence against predators.
Amazon milk frogs are nocturnal. They spend their days tucked away in tiny crevices within trees, high in the canopy.
These frogs have a very large vocal sack and are capable of producing extremely loud calls; these calls can travel a long distance through the rainforest.