Brian Bevan / Horned frog (Ceratophrys ornata) catching a cricket, UK. Captive, native to South America.

Emanuele Biggi / Peruvian horned frog (Ceratophrys cornuta) camouflaged in leaf litter, Peru

Emanuele Biggi / Peruvian horned frog (Ceratophrys cornuta) peering above leaf litter, Peru

Emanuele Biggi / Peruvian horned frog (Ceratophrys cornuta) camouflaged in leaf litter, Peru

Emanuele Biggi / Peruvian horned frog (Ceratophrys cornuta) camouflaged in leaf litter, Peru

Thomas Marent / Amazon Horned Frog (Ceratophrys cornuta), Amacayacu National Park, Leticia, Colombia

Pete Oxford / Pacific Horned Frog (Ceratophrys stolzmanni) in defensive posture, native to South America

Pete Oxford / Pacific Horned Frog (Ceratophrys stolzmanni), native to South America

Konrad Wothe / Amazonian horned frog (Ceratophrys cornuta) camouflaged on rainforest floor, Panguana Reserve, Huanuca province, Amazon basin, Peru.

Chris Mattison / Horned frog (Ceratophrys sp) in shallow water, captive occurs in South America.

Chris Mattison / Horned frog (Ceratophrys sp) in shallow water, captive occurs in South America.

Chris Mattison / South Amercian Horned Frog (Ceratophrys calcarata) against white background, captive.