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

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

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

Ingo Arndt / Asian Horned Frog (Megophrys nasuta), native to Asia

Chien Lee / Kinabalu Horned Frog (Megophrys baluensis), Kinabalu National Park, Sabah, Malaysia

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

Chien Lee / Asian Horned Frog (Megophrys nasuta) female and Matang Narrow-mouthed Frog (Microhyla nepenthicola) camouflaged in leaf litter, Kubah National Park, Sarawak, Malaysia

Chien Lee / Asian Horned Frog (Megophrys nasuta) female and Matang Narrow-mouthed Frog (Microhyla nepenthicola) camouflaged in leaf litter, Kubah National Park, Sarawak, Malaysia

Edwin Giesbers / Asian / Javan horned frog (Megophrys montana) captive

Edwin Giesbers / Asian / Javan horned frog (Megophrys montana) captive

Chien Lee / Kinabalu Horned Frog (Megophrys baluensis), Mount Kinabalu National Park, Sabah, Borneo, Malaysia

Chien Lee / Rough Horned Frog (Borneophrys edwardinae) male camouflaged in leaf litter, Sarawak, Borneo, Malaysia

Edwin Giesbers / Javan horned frog (Megophrys montana) captive, occurs in Indonesia.

Chien Lee / Asian Horned Frog (Megophrys nasuta) calling, Malaysia

Chris Mattison / Asian horned frogs (Megophrys nasuta) in amplexus, on white background, captive occurs in South East Asia.

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

Chien Lee / Mindanao Horned Frog (Megophrys stejnegeri) camouflaged in leaf litter, Mount Kiamo, Mindanao Island, Philippines

Chien Lee / Rough Horned Frog (Borneophrys edwardinae), Sarawak, Borneo, Malaysia

Thomas Marent / Asian Horned Frog (Megophrys nasuta) beside a creek, Cameron Highlands, Malaysia

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

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

Chien Lee / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Gunung Mulu National Park, Malaysia

Chien Lee / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Gunung Mulu National Park, Malaysia

Chien Lee / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Gunung Mulu National Park, Malaysia

Chien Lee / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Gunung Mulu National Park, Malaysia

Chien Lee / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Gunung Mulu National Park, Malaysia

Thomas Marent / Asian Horned Frog (Megophrys nasuta) on log, Cameron Highlands, Malaysia

Thomas Marent / Asian Horned Frog (Megophrys nasuta) beside a creek, Cameron Highlands, Malaysia

Thomas Marent / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Gunung Leuser National Park, northern Sumatra, Indonesia

Thomas Marent / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Gunung Leuser National Park, northern Sumatra, Indonesia

Chien Lee / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Danum Valley Conservation Area, Borneo, Malaysia

Chien Lee / Asian Horned Frog (Megophrys nasuta) camouflaged on forest floor, Borneo, Malaysia

Chien Lee / Asian Horned Frog (Megophrys nasuta) camouflaged on forest floor, Borneo, Malaysia

Thomas Marent / Asian Horned Frog (Megophrys nasuta) portrait, Gunung Gading National Park, Sarawak, Borneo, Malaysia

Thomas Marent / Asian Horned Frog (Megophrys nasuta) portrait, Gunung Gading National Park, Sarawak, Borneo, Malaysia

Juan Manuel Borrero / Asian horned frog {Megophrys nasuta} camouflaged in leaf litter

Heidi & Hans-Juergen Koch / Asian Horned Frog (Megophrys nasuta) camouflaged against leaf litter on ground, native to tropical rainforests of Asia

Mark Moffett / Southeast Asian Horned Frog (Megophrys lateralis) mimics dead leaf litter, Tam Dao National Park, Vietnam

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

Chien Lee / Asian Horned Frog (Megophrys nasuta), Kubah National Park, Sarawak, Borneo, Malaysia

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

Joel Sartore / Photo Ark / Two Javan horned frogs (Megophrys montana) sitting side by side breathing. Captive.

Christian Ziegler / Asian Horned Frog (Megophrys sp) camouflaged in leaf litter, Penang, Malaysia

Chris Mattison / Asian horned frog (Megophrys nasuta) tadpole swimming amongst aquatic plants.