Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on a tree trunk in the lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Frog {Rana similis} Sierra Madre National Park, Luzon, Philippines

Roland Seitre / Lemur leaf frog (Hylomantis / Phyllomedusa lemur) El Valle Amphibian Conservation Center, Panama, Central America, Critically Endangered species

Roland Seitre / Conservation officer carries out leg surgery on a Panamanian golden frog / Golden arrow poison frog (Atelopus zeteki) at the El Valle Amphibian Conservation Center, Panama, Central America, March 2008...

Roland Seitre / Conservation officer administers anti-parasite treatment to Panamanian golden frog / Golden arrow poison frog (Atelopus zeteki) at the El Valle Amphibian Conservation Center, Panama, Central America,...

Roland Seitre / Conservation officer administers anti-parasite treatment to Panamanian golden frog / Golden arrow poison frog (Atelopus zeteki) at the El Valle Amphibian Conservation Center, Panama, Central America,...

Roland Seitre / Conservation officer administers anti-parasite treatment to Panamanian golden frog / Golden arrow poison frog (Atelopus zeteki) at the El Valle Amphibian Conservation Center, Panama, Central America,...

Roland Seitre / Panamanian golden frog / Golden arrow poison frog (Atelopus zeteki) female with eggs, El Valle Amphibian Conservation Center, Panama, Central America, March 2008, Critically endangered species

Roland Seitre / Veterinary officer, Eric Baitchman, and Conservation officer, Heidi Griffith, examining female Panamanian golden frog / Golden arrow poison frog (Atelopus zeteki) at frog breeding station, El Valle Am...

Roland Seitre / Conservation officer demonstrates Panamanian golden frog / Golden arrow poison frog (Atelopus zeteki) female with eggs, El Valle Amphibian Conservation Center, Panama, Central America, March 2008, Cri...

Roland Seitre / Conservation officer, Heidi Griffith, holds Panamanian golden frog / Golden arrow poison frog (Atelopus zeteki) at frog breeding station, El Valle Amphibian Conservation Center, Panama, Central Americ...

Tim Laman / Malaysian naturalist, Saimon Ambi, observes a Wallace's flying frog (Rhacophorus nigropalmatus) on a branch near a pig wallow pool breeding site in the lowland rainforest, Danum Valley Conservation Ar...

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) held in photographer's hand, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on a tree trunk in the lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on a tree trunk in the lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Wallace's flying frog (Rhacophorus nigropalmatus) on a tree trunk in the lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Collett's Tree Frog (Polypedates colletti) on a tree trunk in the lowland rainforest in Borneo. Gunung Palung National Park, Indonesia

Tim Laman / Portrait of Collett's Tree Frog (Polypedates colletti) sitting on hanging dead leaves in the lowland rainforest in Borneo. Gunung Palung National Park, Indonesia

Tim Laman / Reinwardt's / Java flying frog (Rhacophorus reinwardti) at the edge of a pig wallow breeding pool in lowland rainforest, Danum Valley Conservation Area, Sabah, Borneo, Malaysia.

Tim Laman / Reinwardt's flying / Java gliding frog (Rhacophorus reinwardti) climbing small tree in the lowland rainforest, Danum Valley Conservation Area, Sabah, Malaysia, Borneo

Tim Laman / Reinwardt's flying / Java gliding frog (Rhacophorus reinwardti) on a small tree in the lowland rainforest, Danum Valley Conservation Area, Sabah, Malaysia, Borneo

Tim Laman / Reinwardt's flying / Java gliding frog (Rhacophorus reinwardti) on a small tree in the lowland rainforest, Danum Valley Conservation Area, Sabah, Malaysia, Borneo

Tim Laman / Frog {Platymantis dorsalis} Panay Island Northwest mountains, Philippines, May

Juergen Freund / Northern Barred-frog {Mixophyes schevilli} Queensland, Australia

John Cancalosi / Common frogs spawning {Rana temporaria} UK

Bernard Castelein / Common frogs in water {Rana temporaria} Belgium

Nick Garbutt / Bornean eared frog {Polypedates otilophus} Sabah, Borneo Danum valley

John Cancalosi / Common frogs mating {Rana temporaria} UK