Piotr Naskrecki / Painted Reed Frog (Hyperolius marmoratus) being eaten by Fishing Spider (Pisauridae), Gorongosa National Park, Mozambique

Chris Mattison / Spotted reed frog (Hyperolius pucticulatus) tadpoles, captive, endemic to Tanzania.

Piotr Naskrecki / Yellow-spotted Tree Frog (Leptopelis flavomaculatus), Gorongosa National Park, Mozambique

Ch'ien Lee / White-spotted Reed Frog (Heterixalus alboguttatus), Ranomafana National Park, Madagascar

Paul Bertner / Spotted Madagascar Reed Frog (Heterixalus punctatus) eye, Andasibe-Mantadia National Park, Antananarivo, Madagascar

Cyril Ruoso / Annually flooded area, an ideal habitat for Oregon spotted frog (Rana pretiosa) to reproduce. Conboy Lake National Wildlife Refuge, Washington, USA

Piotr Naskrecki / Ivory Coast Running Frog (Kassina arboricola), Atewa Range Forest Reserve, Atewa Range, Ghana

Thomas Marent / Spotted Madagascar Reed Frog (Heterixalus punctatus), Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Spotted Madagascar Reed Frog (Heterixalus punctatus), Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Spotted Madagascar Reed Frog (Heterixalus punctatus), Andasibe-Mantadia National Park, Madagascar

Thomas Marent / Spotted Madagascar Reed Frog (Heterixalus punctatus), Andasibe-Mantadia National Park, 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 / Cochran's Running Frog (Kassina cochranae) rarely jumps, it instead prefers to run swiftly on its beautifully spotted legs, Guinea, West Africa

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

Ch'ien Lee / White-spotted Reed Frog (Heterixalus alboguttatus), Ranomafana National Park, Madagascar

Piotr Naskrecki / Painted Reed Frog (Hyperolius marmoratus), Gorongosa National Park, Mozambique

Piotr Naskrecki / Yellow-spotted Tree Frog (Leptopelis flavomaculatus), Gorongosa National Park, Mozambique

Piotr Naskrecki / Painted Reed Frog (Hyperolius marmoratus), Gorongosa National Park, Mozambique

Chien Lee / Painted Reed Frog (Hyperolius marmoratus) at night, Okavango Delta, Botswana

PREMAPHOTOS / Red spotted reed frog (Hyperolius rubrovermiculatus) on lichen-covered log in the Shimba Hills, Kenya

Chris Mattison / Developing eggs of Spotted reed frog (Hyperolius puncticulatus) at day 8, just prior to hatching.

Chris Mattison / Spotted reed frog (Hyperolius puncticulatus) sitting on leaf, Tanzania, Africa.

Chris Mattison / Spotted reed frog (Hyperolius puncticulatus) sitting on leaf, Tanzania, Africa.

Chris Mattison / White-spotted reed frog (Heterixalus alboguttatus), female, sitting on a leaf, Madagascar.

Chris Mattison / White-spotted reed frog (Heterixalus alboguttatus), female, sitting on a leaf, Madagascar.

Chris Mattison / Eggs of Spotted reed frog (Hyperolius puncticulatus), Tanzania, Africa.

Chris Mattison / Spotted running frog (Kassina maculata) sitting on dried leaf, Tanzania, East Africa.

Chris Mattison / Spotted running frog (Kassina maculata) on bamboo cane at night, Tanzania, East Africa.

Chris Mattison / Spotted reed frog (Hyperolius puncticulatus) amongst reeds, Tanzania, Africa

Chris Mattison / Juvenile Spotted reed frog (Hyperolius puncticulatus), Tanzania, Africa.

Chris Mattison / Juvenile Spotted reed frog (Hyperolius puncticulatus) sitting on petal, Tanzania, Africa

Chris Mattison / Male Argus reed frog (Hyperolius argus), male, sitting on lily pad, South Africa.

Chris Mattison / Female Argus reed frog (Hyperolius argus) sitting on lily pad, South Africa.

Chris Mattison / Male Argus reed frog (Hyperolius argus) sitting on lily pad, South Africa.

Chris Mattison / Marbled reed frog (Hyperolius marmoratus) climbing on leaves, Tanzania, Africa.