Chien Lee / Kobayashi's Horned Frog (Megophrys kobayashii), Kinabalu National Park, Sabah, Malaysia

Chien Lee / Amazon Horned Frog (Ceratophrys cornuta), Yasuni National Park, Ecuador

Chien Lee / Amazon Horned Frog (Ceratophrys cornuta) camouflaged in leaf litter, Yasuni National Park, Ecuador

Chien Lee / Amazon Horned Frog (Ceratophrys cornuta), Yasuni National Park, Ecuador

Brian Bevan / Surinam horned frog (Ceratophrys cornuta) eating a locust, UK. Captive, native to the Americas.

Chien Lee / Asian Horned Frog (Megophrys nasuta) female, Gunung Penrissen, Sarawak, Borneo, Malaysia

Claudio Contreras / Texas horned lizard (Phrynosoma cornutum) portrait, Laredo Borderlands, Texas, USA. April

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

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

Chien Lee / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Danum Valley Field Center, Sabah, Borneo, Malaysia

Tim Laman / Head portrait of Bornean Horned Frog (Megophrys nasuta) among the leaf litter in the lowland rainforest of Borneo. Danum Valley Conservation Area, Sabah, Malaysia

Stephen Dalton / Horned frog (Ceratophrys ornata) sitting on leaves, controlled conditions, from South America