Mitsuhiko Imamori / Black-spotted Frog (Rana nigromaculata) leaping from pond, Japan

Mitsuhiko Imamori / Black-spotted Frog (Rana nigromaculata) leaping from pond, Japan

Thomas Marent / Harlequin Poison Dart Frog (Dendrobates histrionicus) arusi color morph, Colombia

Thomas Marent / Condoto Stubfoot Toad (Atelopus spurrelli), Utria National Park, Colombia

Thomas Marent / Harlequin Poison Dart Frog (Dendrobates histrionicus) codicia color morph, Colombia

Roland Seitre / Harlequin Poison Dart Frog (Oophaga histrionica), red spotted morph. Captive. Cali Zoo, Cali, Colombia.

Nick Garbutt / Black-spotted Rock Frog (Staurois natator). Centre of Maliau Basin, Sabah's 'Lost World', Borneo.

Nature Production / Close up of webbed foot of Black-spotted Frog (Rana nigromaculata) male, Japan

Jouan & Rius / Black spotted rock frog (Staurois natator) Gunung Gading NP, Borneo, Sarawak, Malaysia

Thomas Marent / Black-spotted Narrow-mouthed Frog (Kalophrynus pleurostigma), Forest Research Institute Malaysia, Malaysia

Thomas Marent / Black-spotted Narrow-mouthed Frog (Kalophrynus pleurostigma), Forest Research Institute Malaysia, Malaysia

Tony Heald / Black-spotted Rock Frog [Staurois natator] Danum Valley, Sabah, Borneo, September

Robert Valentic / Red bellied black snake {Pseudechis porphyriacus} swallowing Spotted grass frog {Limnodynastes tasmaniensis} Victoria, Australia

Nature Production / Black spotted frog {Rana nigromaculata} tadpole with fore and hind legs, Japan, sequence 4/4

Nature Production / Black spotted frog {Rana nigromaculata} tadpole (70mm in length with hind legs) Japan, sequence 3/4

Nature Production / Black spotted frog {Rana nigromaculata} tadpole (44mm in length) Japan, sequence 2/4

Nature Production / Black spotted frog {Rana nigromaculata} tadpole (16mm in length) Japan, sequence 1/4

Nature Production / Black-spotted Frog {Rana nigromaculata} swimming, Japan, sequence 1/2, captive,

Nature Production / Black-spotted Frog {Rana nigromaculata} swimming, Japan, sequence 2/2, captive,

Nature Production / Black-spotted Frog {Rana nigromaculata} overwintering, captive, Japan

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

ZSSD / Poison Dart Frog displays striking yellow and black warning coloration which alerts potential predators to its toxicity

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

Nature Production / Frogspawn of the Black-spotted Frog {Rana nigromaculata} Japan