Amazon Milk Frog (Trachycephalus resinifictrix) they inhabit the Amazon rainforest in South America. When the frog perceives a threat, it secretes a white substance from its back, which is where it gets the name, Milk Frog. They are also known as; Mission golden-eyed tree frog, blue milk frog, Rainette kunawalu, Baumhöhlen-Krötenlaubfrosch, Rana lechera amazonica.