Chris Mattison / Cochran's running frog (Kassina cochranae), captive, occurs in West Africa

Chris Mattison / Cochran's running frog (Kassina cochranae), captive, occurs in West Africa

Piotr Naskrecki / African Foam-nest Treefrog (Chiromantis rufescens), Atewa Range, Ghana

Piotr Naskrecki / African Foam-nest Treefrog (Chiromantis rufescens) pair in amplexus, Atewa Range, Ghana

Thomas Marent / Mantellid Frog (Boophis bottae), Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Mantellid Frog (Boophis bottae), Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Mantellid Frog (Boophis tephraeomystax) portrait, Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Mantellid Frog (Boophis tephraeomystax), Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Golden Mantella (Mantella aurantiaca) frog group, Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Golden Mantella (Mantella aurantiaca) frog, Andasibe-Mantadia National Park, Madagascar

Michael & Patricia Fogden / Grey Tree Frog (Chiromantis xerampelina) group foam nesting over seasonal pond, South Africa

Konrad Wothe / Golden Mantella (Mantella aurantiaca) critically endangered frog in underbrush, Madagascar

Konrad Wothe / Golden Mantella (Mantella aurantiaca) critically endangered frog pair in underbrush, Madagascar

PREMAPHOTOS / Coast Foam-nesting Tree Frog / Southeastern Foam-nest Tree Frogs / African Grey Frogs (Chiromantis xerampelina) making foam nest at night in the savanna, South Africa

Patricio Robles Gil / Eastern White-lipped Treefrog (Boophis albilabris), Madagascar

Piotr Naskrecki / Painted Reed Frog (Hyperolius marmoratus) portrait, Okavango Delta, Botswana

Piotr Naskrecki / Painted Reed Frog (Hyperolius marmoratus) changing color from darkly patterned to white by contracting or expanding skin cells called chromatophores, white skin reflects sunlight effectively lowering...

Piotr Naskrecki / Painted Reed Frog (Hyperolius marmoratus) clinging to reed, Okavango Delta, Botswana

Piotr Naskrecki / Painted Reed Frog (Hyperolius marmoratus) clinging to stem, Botswana

Piotr Naskrecki / African Tree Frog (Leptopelis hyloides) common in West African forests, their adaptations to the arboreal lifestyle such as enlarged toe pads and grasping fingers are examples of evolutionary converge...

Piotr Naskrecki / Old World Tree Frog (Chiromantis sp) camouflaged on limb, Guinea, West Africa

Pete Oxford / Golden Mantella (Mantella aurantiaca) frogs, which are only orange, and Painted Mantella (Mantella madagascariensis) frogs, which are green, black, and orange, captured for pet trade export, Madagasca...

Mark Moffett / African Tree Frog (Leptopelis sp) portrait, Ivory Coast, Africa

Michael & Patricia Fogden / Painted Reed Frog (Hyperolius marmoratus) male calling from seasonal pond, savannah, South Africa

Gerry Ellis / Tinker Reed Frog (Hyperolius tuberilinguis) on Fever Tree bark, Ndumo Game Reserve, South Africa

Gerry Ellis / Painted Reed Frog (Hyperolius marmoratus) on leaf, Ndumo Game Reserve, South Africa

Gerry Ellis / Painted Reed Frog (Hyperolius marmoratus), Ndumo Game Reserve, South Africa

Gerry Ellis / Painted Reed Frog (Hyperolius marmoratus) clinging to leaf, Ndumo Game Reserve, South Africa

Michael & Patricia Fogden / Painted Reed Frog (Hyperolius marmoratus) male calling from seasonal pond, savannah, South Africa

Michael & Patricia Fogden / Water Lily Reed Frog (Hyperolius pusillus) male calling to female, seasonal ponds, savannah, South Africa

Michael & Patricia Fogden / Water Lily Reed Frog (Hyperolius pusillus) male calling to female, seasonal ponds, savannah, South Africa

Michael & Patricia Fogden / Grey Tree Frog (Chiromantis xerampelina) tadpoles dropping from foam nest, seasonal ponds, savannah, South Africa

Michael & Patricia Fogden / Grey Tree Frog (Chiromantis xerampelina) tadpoles dropping from foam nest, seasonal ponds, savannah, South Africa

Michael & Patricia Fogden / Grey Tree Frog (Chiromantis xerampelina) group co-operative foam nesting, seasonal ponds, savannah, South Africa

Michael & Patricia Fogden / Grey Tree Frog (Chiromantis xerampelina) group co-operative foam nesting, seasonal ponds, savannah, South Africa

Michael & Patricia Fogden / Grey Tree Frog (Chiromantis xerampelina) group co-operative foam nesting, seasonal ponds, savannah, South Africa

Michael & Patricia Fogden / Grey Tree Frog (Chiromantis xerampelina) pair in daytime resting position, savannah, South Africa

Gerry Ellis / Tree Frog (Rana sp) hiding between plant leaves, Virunga Mountains, central Africa

Thomas Marent / Elena's Bright-eyed Frog (Boophis elenae), Ranomafana National Park, Madagascar