Alastair MacEwen / Time-lapse of frogspawn from a Common frog (Rana temporaria) developing, Somerset, England, UK, April.

John Waters / Group of Common frogs (Rana temporaria) spawning in a garden pond, with floating spawn, Somerset, England, UK, March.

Ingo Arndt / European edible frog eyes showing above water {Rana esculenta} Germany

Ingo Arndt / Common frog on lily pad {Rana temporaria} Germany

Ingo Arndt / European edible frog half submerged in water {Rana esculenta} Germany

Ingo Arndt / European edible frog {Rana esculenta} hidden amongst pondweed Germany

Ingo Arndt / Looking down on European edible frog in pond weed (Rana esculenta) Germany

Laurent Geslin / European edible frog (Rana esculenta) in urban park, next to pond with buildings in distance, Grenoble, France, May.

Cyril Ruoso / Common frogs (Rana temporaria) and frogspawn in pond, Yonne, Burgundy, France, February. Commended in the Reptiles, Amphibians and Fish Category of the Wildlife Photographer of the Year Awards competi...

Cyril Ruoso / Inmates of the Cedar Creek Corrections Center raising endangered Oregon spotted frog (Rana pretiosa) Prisoners in this facility are raising endangered frogs for release in the wild, as part of the Sus...

John Cancalosi / American bullfrog (Lithobates catesbeianus) next to Water lily flower, Washington DC, USA, July.

John Cancalosi / American bullfrog (Lithobates catesbeianus) swimming near Water lilies (Nymphaea sp) Washington DC, USA. July.