Alex Mustard / 2020VISION / Silhouette of Common toad (Bufo bufo) swimming in River Orchy, Highlands, Scotland, UK, April

Stephen Dalton / Wallace's flying frog (Rhacophorus nigropalmatus) gliding from tree, controlled conditions, from Malaysia and Indonesia

Thomas Marent / Splendid Poison Dart Frog (Dendrobates sylvaticus) in rainforest, Timbiqui, Colombia

Thomas Marent / Golden Poison Dart Frog (Phyllobates terribilis) in rainforest, Timbiqui, Colombia

Thomas Marent / Buckley's Slender-legged Treefrog (Osteocephalus buckleyi), Putumayo, Colombia

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

Piotr Naskrecki / Red-eyed Tree Frog (Agalychnis callidryas), Belize

Chien Lee / Minden / Black-headed Cat Snake (Boiga nigriceps) swallowing alive Harlequin Flying Tree Frog (Rhacophorus pardalis) prey, Kubah National Park, Sarawak, Malaysia, sequence 1 of 4

Chien Lee / Rough Tree Frog (Theloderma horridum) camouflaged on bark, Kuching, Sarawak, Borneo, Malaysia

Chien Lee / Harlequin Poison Dart Frog (Dendrobates histrionicus), Utria National Park, Colombia

Chien Lee / Ecuador Poison Frog (Epipedobates bilinguis), El Coca, Ecuador

Chien Lee / Kobayashi's Horned Frog (Megophrys kobayashii), Kinabalu National Park, Sabah, Malaysia

Chien Lee / Borneo Opposite-fingered Tree Frog (Chiromantis inexpectatus), new species, Maliau Basin, Sabah, Malaysia

Chien Lee / Masked Treefrog (Rhacophorus angulirostris) male, Kinabalu National Park, Sabah, Malaysia

Chien Lee / Bornean Smaller Flying Frog (Rhacophorus borneensis), Kubah National Park, Sarawak, Malaysia

Chien Lee / Painted Indonesian Treefrog (Nyctixalus pictus), Lundu, Sarawak, Malaysia

Chien Lee / Kokoe Poison Dart Frog (Phyllobates aurotaenia), Utria National Park, Colombia

Chien Lee / Condoto Stubfoot Toad (Atelopus spurrelli), Utria National Park, Colombia

Chien Lee / Amazon Horned Frog (Ceratophrys cornuta), Yasuni National Park, Ecuador

Chien Lee / Amazon Horned Frog (Ceratophrys cornuta) camouflaged in leaf litter, Yasuni National Park, Ecuador

Chien Lee / Amazon Horned Frog (Ceratophrys cornuta), Yasuni National Park, Ecuador

Chien Lee / White-lined Leaf Frog (Phyllomedusa vaillanti) in rainforest, Ecuador

Chien Lee / Golden Mantella (Mantella aurantiaca) in forest, Andasibe, Madagascar

Chien Lee / Golden Mantella (Mantella aurantiaca), Andasibe, Madagascar

Chien Lee / Spike-browed Frog (Sphenophryne cornuta) father transporting froglets, Digul River, West Papua, Indonesia

Chien Lee / Spike-browed Frog (Sphenophryne cornuta) father transporting froglets, Digul River, West Papua, Indonesia

Agustin Esmoris / Yellow Cururu Toad (Rhinella icterica), Argentina

Paul Bertner / Strawberry Poison Dart Frog (Oophaga pumilio), bastimentos morph, Bastimentos Island, Panama

Paul Bertner / Mantellid Frog (Mantidactylus aglavei), Ranomafana National Park, Madagascar

Paul Bertner / Painted Indonesian Treefrog (Nyctixalus pictus), Bukit Barisan Selatan National Park, Sumatra, Indonesia

Ingo Arndt / Common toad (Bufo bufo) eggs close up.

Ingo Arndt / Close up of webbed foot of Surinam toad {Pipa pipa}

Ingo Arndt / Close up of webbed foot of African clawed frog {Xenopus laevis}

Ingo Arndt / Close up of foot and eye of Red eyed tree frog {Agalychnis callidryas}

Ingo Arndt / Red eyed tree frog portrait {Agalychnis callidryas} Central America

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

Ingo Arndt / Blue poison arrow frogs {Dendrobates azureus} South America

Ingo Arndt / Natterjack toads, mating pair with strings of toad spawn {Bufo calamita} Germany

Ingo Arndt / Natterjack toad male calling {Bufo calamita} vocal sac inflated, 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 / Yellow bellied toad {Bombina variegata} Germany

Ingo Arndt / Natterjack toad {Bufo calamita} portrait Germany

Ingo Arndt / Natterjack toad {Bufo calamita} Germany

Ingo Arndt / Natterjack toad calling, vocal sac inflated {Bufo calamita} Germany

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

Chien Lee / Asian Horned Frog (Megophrys nasuta) female, Gunung Penrissen, Sarawak, Borneo, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus), Gunung Penrissen, Sarawak, Borneo, Malaysia

Yashpal Rathore / Jayarami Bush frog (Raorchestes jayarami), inflating vocal sac, calling to attract mate, Endemic to Western Ghats. Anamalai Wildlife Sanctuary, India.

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

Nick Hawkins / Red-eyed treefrog (Agalychnis calidryas) Costa Rica, April 2015.

Jordi Chias / Two male Dusky groupers (Epinephelus marginatus) fighting for territory during mating season at 'baixa do meros', a small pinnacle at Formigas islets Protected area, near Santa Maria Island, Azores. F...

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...

Alex Hyde / Lemur leaf frog (Agalychnis lemur) Central Caribbean foothills, Costa Rica. IUCN Red List critically endangered species.

Alex Hyde / Yellow-flecked glassfrogs (Sachatamia albomaculata) mating pair, Osa Peninsula, Costa Rica

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...

Lucas Bustamante / Anthony's poison-frog (Epipedobates anthonyi) seen through hole in leaf. Buenaventura Reserve, El Oro, Ecuador.

Lucas Bustamante / Sarayacu clownfrog (Dendropsophus sarayacuensis) with its clutch of eggs developing and starting to drop off from a leaf into the water below, where the tadpoles will develop. Sumaco National Park, N...

Pete Oxford / Tiger tree frog (Hyloscirtus tigrinus) captive, endemic to Ecuador.

Pete Oxford / San Lucas marsupial frog (Gastrotheca pseustes) captive, occurs in Ecuadorian Andes.

Andres M. Dominguez / Fire salamander (Salamandra salamandra) in a Beech forest (Fagus sylvatica) Saja Besaya Natural Park, Saja, Cantabria, Spain, August.

Pete Oxford / Marsupial Frog (Gastrotheca riobambae) tadpole, native to South America

Pete Oxford / Phantasmal Poison Dart Frog (Epipedobates tricolor), native to South America

Pete Oxford / Marsupial Frog (Gastrotheca orophylax), native to South America

Pete Oxford / Pacific Horned Frog (Ceratophrys stolzmanni), native to South America

Pete Oxford / Marsupial Frog (Gastrotheca orophylax) hiding in bromeliad, native to South America

Pete Oxford / Anthony's Poison Arrow Frog (Epipedobates anthonyi) male carrying tadpoles, native to South America

Pete Oxford / Glass Frog (Hyalinobatrachium aureoguttatum) pair, native to South America

Pete Oxford / Anthony's Poison Arrow Frog (Epipedobates anthonyi), native to South America

Pete Oxford / Glass Frog (Hyalinobatrachium aureoguttatum) underside showing internal organs, native to South America

Pete Oxford / Glass Frog (Hyalinobatrachium aureoguttatum) underside showing internal organs, native to South America

Pete Oxford / Glass Frog (Hyalinobatrachium aureoguttatum) underside showing internal organs, native to South America

Edwin Giesbers / Crested newt (Triturus carnifex) Gelderland, The Netherlands, April. Winner of the Amphibians category of the Wildlife Photographer of the Year Awards (WPOY) Competition 2015. Winner of the Underwater...

Chien Lee / Asian Horned Frog (Megophrys nasuta) camouflaged in leaf litter, Danum Valley Field Center, Sabah, Borneo, Malaysia

Chien Lee / Wallace's Flying Frog (Rhacophorus nigropalmatus) gliding, Danum Valley Field Center, Sabah, Borneo, Malaysia

Cyril Ruoso / Red-headed Poison Frog (Dendrobates fantasticus), Amazon, Peru

Cyril Ruoso / Mimic Poison Frog (Dendrobates imitator), Amazon, Peru

Cyril Ruoso / Mimic Poison Frog (Dendrobates imitator), Amazon, Peru

Luciano Candisani / Treefrog (Dendropsophus elegans) on fern, Atlantic Forest, Brazil

Sean Crane / Red-eyed Tree Frog (Agalychnis callidryas) calling, Tortuguero National Park, Costa Rica

Mark Hamblin / 2020VISION / Two male Common frogs (Rana temporaria) trying to mate with a female in a garden pond, Warwickshire, England, March.

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

Laurent Geslin / European toad (Bufo bufo) crossing a road at night with car headlights

Cyril Ruoso / Common Frog (Rana temporaria) group in breeding pond at around 2000 meters, Alps, France

Cyril Ruoso / Common Frog (Rana temporaria) group on ice covering parts of breeding pond at around 2000 meters, Alps, France

Bert Willaert,Bert Willaert / Portrait of a Spiny-chest Frog (Alsodes norae) endemic to Oncol Park, Chile, January

Bert Willaert,Bert Willaert / Portrait of a Darwin's Frog (Rhinoderma darwinii) Chile, Vulnerable species

Bert Willaert,Bert Willaert / Chile Four-eyed Frog (Pleurodema thaul) showing how it got its name - eye spots on the back of it's body, Chile, December,. Controlled conditions,

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) at waters edge, with reflection, Santa Rita, Costa Rica

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica

Bence Mate / Portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica

Bence Mate / Portrait of Red-eyed tree frog (Agalychnis callidryas) with reflection, Santa Rita, Costa Rica

Bence Mate / Head portrait of Red-eyed tree frog (Agalychnis callidryas) Santa Rita, Costa Rica

Bence Mate / Portrait of Splendid leaf frog (Agalychnis calcarifer) climbing vegetation, Santa Rita, Costa Rica