The Amazonian Horned Frog (Ceratophrys cornuta), also known as Surinam Horned Frog, is a bulky frog measuring up to 20 cm found in the northern part of South America.
It has an exceptionally wide mouth, and has horn-like projections above its eyes.

Reserva Ecologica Taricaya, Puerto Maldonado, Peru, 2 June 2009