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

Phil Savoie / Red eyed tree frog on heliconia (Agalychnis callidryas)

Piotr Naskrecki / Three-striped Poison Dart Frog (Ameerega trivittata) male carrying tadpoles, Suriname

Piotr Naskrecki / Three-striped Poison Dart Frog (Ameerega trivittata) male carrying tadpoles, Suriname

Wild Wonders of Europe / Widstrand / Pool Frog (Rana lessonae) sitting on White lily pad, Danube delta rewilding area, Romania

Dale Sutton / 2020VISION / Common frog (Rana temporaria) leaping into a pond, controlled conditions, UK.

Linda Pitkin / 2020VISION / Water-crowfoot (Ranunculus fluitans subsp. penicillatus) flowering underwater, Cumbria, England, UK, September. Did you know? The latin name for this genus 'Ranunculus' comes from the Latin for 'Litte...

Ross Hoddinott / 2020VISION / Common frog (Rana temporaria) portrait, close-up of eye, Cornwall, UK. January. Did you know? Female Common frogs can lay up to 2000 eggs.

Ross Hoddinott / 2020VISION / Common frog {Rana temporaria}, backlit portrait, Cornwall, UK. January 2012.

Mark Carwardine / Java gliding / Malaysian flying frog (Rhacophorus reinwardti) captive, from South east Asia rainforests

Chris Mattison / Waxy leaf frog (Phyllomedusa sauvagii), captive, occurs South and Central America

Chris Mattison / Amazon milk frog (Phrynohyas resinifictrix), captive, occurs South America

Philippe Clement / Common tree frog (Hyla arborea) sitting on branch covered in lichen at night with full moon, La Brenne, France, May. Digital composite

Andy Rouse / Dahl's Aquatic frog (Litoria dahli) in water, Bamarru Plains, North West Territories, Australia

Michael D. Kern / Waxy monkey tree frog (Phyllomedusa sauvagii) captive, from Central and South America

Michael D. Kern / Maroon eye / Moon frog (Leptopelis uluguruensis) captive, from East Africa

Nick Garbutt / Wallace's Flying frog (Rhacophorus nigropalmatus) male from lowland dipterocarp rainforest, Danum Valley, Sabah, Borneo. Photographed in situ in makeshift studio in the forest.

Nick Garbutt / Wallace's flying frog (Rhacophorus nigropalmatus) male from lowland dipterocarp rainforest, Danum Valley, Sabah, Borneo. Photographed in situ in makeshift studio in the forest.

Mark Hamblin / 2020VISION / Common frog (Rana temporaria) in garden pond, Warwickshire, England, UK, March. Did you know? Frogs return to their natal pond using their sense of smell.

Mark Hamblin / 2020VISION / Pair of Common frogs (Rana temporaria) in garden pond, Warwickshire, England, UK, March

Mark Hamblin / 2020VISION / Common frog (Rana temporaria) in garden pond, Warwickshire, England, UK, March

Mark Hamblin / 2020VISION / Common frogs (Rana temporaria) spawning in garden pond, Warwickshire, England, UK, March

Mark Hamblin / 2020VISION / Girl holding Common frog (Rana temporaria), Warwickshire, England, UK, March. Model released.

Mark Hamblin / 2020VISION / Common frog (Rana temporaria) male calling, in garden pond in spring, Warwickshire, UK

Daniel Heuclin / Goliath frog (Conraua goliath) resting in water, Cameroon.

Daniel Heuclin / Goliath frog (Conraua goliath) sitting on rock on side of river, Cameroon.

Linda Pitkin / 2020VISION / Common frog (Rana temporaria) and frogspawn in a garden pond, Surrey, England, UK, March. 2020VISION Exhibition.

Piotr Naskrecki / Giant Monkey Frog (Phyllomedusa bicolor) female watching an approaching male, Surinam

Pete Oxford / San Lucas marsupial frog (Gastrotheca pseustes) base of Chimborazo Volcano (Highest mountain in Ecuador), Andes, Ecuador, South America - endemic to Ecuador, endangered species.

Bert Willaert / Brightly Coloured Poison-Dart Frog (Oophaga sylvatica). Ecuador, South America.

Bert Willaert / Juvenile South American Common / Crested Forest Toad 1+Rhinella margaritifera 'complex'+2. Ecuador, South America.

Bert Willaert / Trivandrum / Golden Frog (Hylarana aurantiaca) looking upwards. Western Ghats, India.

Bert Willaert / Male Humayun's Wrinkled Frog (Nyctibatrachus humayuni) calling next to egg clutches on leaves. Western Ghats, India.

Konrad Wothe / Common green tree frog (Litoria caerulea) in rainforest, Iron Range National Park, Cape York Peninsula, North Queensland, Australia, October

Tim Laman / Long-nosed Tree Frog (Litoria pinocchio). New species discovered by Paul Oliver at 1200 m elevation in the Foja Mountains. Foja Mountains, Papua, Indonesia, 2008. (taken during Conservation Internatio...

Stefan Huwiler / Edible Frogs (Rana esculenta) on log in water. Switzerland, Europe, July.

Stefan Huwiler / Three Edible Frogs (Rana esculenta) on a log in water. Switzerland, Europe, July.

MYN / Niall Benvie / Comon frog (Rana temporaria) on white background, Scotland, UK, aprilmeetyourneighbours.net project

Piotr Naskrecki / Cross Frog (Oreophryne sp) male protecting his clutch of eggs, Papua New Guinea

Piotr Naskrecki / Ground Frog (Platymantis boulengeri) female protecting her clutch of eggs, Papua New Guinea

Piotr Naskrecki / Cross Frog (Oreophryne sp) male from a newly discovered species protecting his clutch of eggs, Papua New Guinea

Piotr Naskrecki / Cross Frog (Oreophryne sp), newly discovered species, eggs, Papua New Guinea

Rolf Nussbaumer / Cane Toad / Marine Toad / Giant Toad (Bufo marinus) adult jumping in Dogweed (Dyssodia pentachaeta) field. Laredo, Webb County, South Texas, USA, April.

Nature Production / Japanese tree frog (Hyla japonica) hanging from Pumpkin flower, Japan

Pete Oxford / Glass Frog (Espadarana callistomma / centrolenidae). Captive. Choc Region of northwest Ecuador.

Pete Oxford / Portrait of an Emerald Glass Frog (Espadarana / Centrolenella prosoblepon). Captive. Choc Region of northwest Ecuador.

Nature Production / Japanese tree frog (Hyla japonica) climbing up onto hydrangea leaf, Fukuoka, Japan, August, sequence 1/3

Claudio Contreras / Macaya breast-spot landfrog (Eleutherodactylus thorectes), critically endangered, Pic Macaya National Park, Massif de la Hotte, Haiti, October

Claudio Contreras / La Hotte big-legged landfrog (Eleutherodactylus apostates), critically endangered, Haiti, captive

Claudio Contreras / La Hotte landfrog (Eleutherodactylus bakeri), critically endangered, Pic Macaya National Park, Massif de la Hotte, Haiti, October

Solvin Zankl / European tree frog (Hyla arborea) on tree branch, with lake behind, Germany

Pete Oxford / African clawed toad (Xenopus laevis) Albino, captive, from Southern Africa

Pete Oxford / Giant leaf frog (Phyllomedusa bicolor) climbing along branch in rainforest, Iwokrama Reserve, Guyana

Pete Oxford / Giant leaf frog (Phyllomedusa bicolor) climbing along branch in rainforest, Iwokrama Reserve, Guyana

Thomas Marent / Dyeing Poison Frog (Dendrobates tinctorius), Kaw, French Guiana

Thomas Marent / European Tree Frog (Hyla arborea) calling, Switzerland

Pete Oxford / Chachi Tree Frog (Hypsiboas picturatus), northwest Ecuador

Pete Oxford / Northern Glassfrog (Hyalinobatrachium fleischmanni) underside showing internal organs, northwest Ecuador

Bence Mate / Head portrait of Satiny Parrot snake (Leptophis depressirostris) swallowing frog, Hungary, Europe

Alex Hyde / Close up of eye of Tomato frog {Dyscophus antongili} Maroantsetra, Northeast Madagascar

Alex Hyde / Madagascar reed frog {Heterixalus madagascariensis} in front of waterfall, montane rainforest. Andasibe-Mantadia NP, Eastern Madagascar.

Alex Hyde / Madagascar reed frog {Heterixalus madagascariensis} underside viewed through glass, Masoala Peninsula National Park, north east Madagascar.

Rod Williams / Yellow-banded Poison Dart Frog (Dendrobates leucomelas) sitting on colourful variegated leaves. Captive, found in Brazil, Guyana, Venezuela

Alex Hyde / Ground Dwelling tree frog (Gephyromantis / Mantidactylus webbi) camouflaged against moss. Masoala Peninsula National Park, north east Madagascar. IUCN endangered species

Pete Oxford / Cane Toad (Bufo marinus) on riverbank, Essequibo River, Iwokrama Rainforest Reserve, Guyana

Michael D. Kern / Powder blue dart frog (Dendrobates tinctoruis) pair, captive, from Central America

Michael D. Kern / Zoo Atlanta / Lemur leaf frog (Hylomantis lemur) captive, Critically endangered, from Central America

Michael D. Kern / Zoo Atlanta / Lemur leaf frog (Hylomantis lemur) mating pair, captive, Critically endangered, from Central America

Michael D. Kern / Zoo Atlanta / White-spotted leaf frog (Cochranella albomaculata) captive, from Central America. Please credit Michael Kern / Zoo Atlanta.

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 / Rufous-sided sticky frog (Kalophrynus pleurostigma) on the ground in the lowland rainforest, Bako National Park, Sarawak, Borneo, Malaysia

Tim Laman / Head portrait of Bornean Horned Frog (Megophrys nasuta) among the leaf litter in the lowland rainforest of Borneo. Danum Valley Conservation Area, Sabah, Malaysia

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

Tim Laman / Harlequin Tree Frog (Rhacophorus pardalis) in the air with webbed feet spread to glide, Danum Valley Conservation Area, Sabah, Borneo, Malaysia

Pete Oxford / Tapichalaca Tree Frog (Hyloscirtus tapichalaca) captive and endangered. Tapichalaca Reserve, Zamora-Chinchipe, Ecuador, South America.

Pete Oxford / Tapichalaca Tree Frog (Hyloscirtus tapichalaca) captive and endangered. Tapichalaca Reserve, Zamora-Chinchipe, Ecuador, South America.

Stephen Dalton / Jade tree frog (Rhacophorus dulitensis) gliding between trees, controlled conditions

Stephen Dalton / Wallace's gliding frog (Rhacophorus nigropalmatus) flying, controlled conditions

Stephen Dalton / Wallace's gliding frog (Rhacophorus nigropalmatus) flying, controlled conditions

Stephen Dalton / Common european tree frog (Hyla arborea) leaping, multiflash sequence of two images

Stephen Dalton / Close up of eye of Common frog (Rana temporaria)

Stephen Dalton / Common tree frog (Hyla arborea) jumping, multiflash sequence of three images

Miles Barton / Panamanian Golden Frog (Atelopus ziteki) Panama, Featured in BBC NHU series 'Life in Cold Blood'. Species now extinct in the wild

Miles Barton / Panamanian golden frog (Atelopus ziteki) reacting to the image of a frog on a video monitor. Experiment carried out to reveal the purpose of the frog's waving behaviour - to attract mates and deter ri...

Stephen Dalton / Leopard frog (Rana pipiens) diving into water, controlled conditions

Stephen Dalton / Leopard frog (Rana pipiens) jumping from rock into water, controlled conditions

Stephen Dalton / Red-eyed tree frog (Agalychnis callidryas) leaping to catch cricket, Central America, controlled conditions

Stephen Dalton / Leopard frog {Rana pipiens} diving into water, controlled conditions, from USA

Stephen Dalton / Wallace's flying frog (Rhacophorus nigropalmatus) leaping, controlled conditions, from Asia

Stephen Dalton / Close up of eye of Common frog {Rana temporaria} UK, controlled conditions

Stephen Dalton / Leopard frog (Rana pipiens) leaping from water, controlled conditions, from USA

Stephen Dalton / Common european tree frog {Hyla arborea} jumping sequence, multiflash image, controlled conditions, UK

Stephen Dalton / Mass of frogspawn of Common frog {Rana temporaria} UK

Stephen Dalton / Common frog {Rana temporaria} diving into water, controlled conditions, UK

Stephen Dalton / Common frog {Rana temporaria} froglet sitting on lily pad in water, UK

Stephen Dalton / Common / European treefrog {Hyla arborea} jumping sequence, multiflash image, controlled conditions