course of several months. The grey foam-nest tree frog forms uric acid and excretes it from their body as a nitrogenous end product. Anywhere between fifty and seventy-five percent of total waste nitrogen is converted into uric acid, while the other twenty-five to fifty percent is expelled as urea in waste. This uric acid excreted can be released in a solid form and does not cause any water loss for the frog. This is especially suitable for grey foam-nest tree frogs due to the fact that they primarily inhabit dry environments, where minimizing water loss is highly important. Threats It is known that adults of both sexes of Afrixalus fornasinii prey on grey foam-nest tree frog eggs and tadpoles. This species is the first African anuran to demonstrate hetero-cannibalism by preying on eggs belonging to the same family. See also Chiromantis petersii African foam-nest tree frog Chiromantis kelleri References Chiromantis Amphibians of Kenya Amphibians of Tanzania Amphibians of Angola Amphibians of South Africa Taxonomy articles created by Polbot Amphibians described in 1854 Taxa named by Wilhelm Peters