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

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

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

Jouan & Rius / Endemic frog (Mantidactylus liber) on leaf in rainforest, Andasibe Mantadia NP, Madagascar

Jouan & Rius / Endemic frog (Mantidactylus liber) at night in rainforest, Andasibe Mantadia NP, Madagascar

Robert Valentic / Following the desert rains a Holy cross frog {Notaden benneti} comes to the surface after a long period underground, Nyngan, New South Wales, Australia

Mark Moffett / Caribbean Tree Frog (Eleutherodactylus coqui) parachuting from tree, this frog holds a cup of air beneath it with its arms as if it were a parachute, leaping to the ground each morning, Puerto Rico

Karl Ammann / Ground hornbill {Bucorvus leadbeateri} with frog prey in beak, Kenya

Mark Payne-Gill / Fiji Ground Frogs (Platymantis vitianus) mating pair, Fiji

Piotr Naskrecki / Australian Ground Frog (Lechriodus aganoposis) in rainforest, Muller Range, Papua New Guinea

Piotr Naskrecki / Ground Frog (Platymantis nakanaiorum), Nakanai Mountains, New Britain, Papua New Guinea

Piotr Naskrecki / Ground Frog (Platymantis sp), newly discovered species, Nakanai Mountains, New Britain, Papua New Guinea

MYN / John Tiddy / Pobblebonk / Eastern Banjo frog (Limnodynastes dumerili) in water, Victoria, Australia, September. meetyourneighbours.net project

MYN / John Tiddy / Pobblebonk / Eastern Banjo frog (Limnodynastes dumerili) in water, Victoria, Australia, September. meetyourneighbours.net project

MYN / John Tiddy / Pobblebonk / Eastern Banjo frog (Limnodynastes dumerili) in water, Victoria, Australia, September. meetyourneighbours.net project

MYN / John Tiddy / Pobblebonk / Eastern Banjo frog (Limnodynastes dumerili) Victoria, Australia. meetyourneighbours.net project

Piotr Naskrecki / Australian Ground Frog (Lechriodus aganoposis), Papua New Guinea

Piotr Naskrecki / Ground Frog (Platymantis mamusiorum), New Britain Island, Papua New Guinea

Jouan & Rius / Ground frog camouflaged amonst leaf litter in rainforest, Gunug Mulu NP, Borneo, Sarawak, Malaysia

Nick Garbutt / Madagascar Giant Stream frog (Mantidactylus guttulatus) active at night on banks of small stream in rainforest. Andasibe-Mantadia National Park, Madagascar. (NB-this is Madagascar's largest native f...

Nick Garbutt / Madagascar Giant Stream frog (Mantidactylus guttulatus) active at night on banks of small stream in rainforest. Andasibe-Mantadia National Park, Madagascar. (NB-this is Madagascar's largest native f...

Nick Garbutt / Eggs of Tree Frog (Guibemantis liber) on leaf overhanging rainforest pond. Vohiparara, Ranomafana National Park, Madagascar.

Tim Laman / Harlequin treefrog (Rhacophorus pardalis) on leaf litter on ground, Bako National Park, Sarawak, Malaysia, Borneo

Alan Watson / Ground dwelling frog (Mantidactylus sp.) on tree branch, in montane rainforest at 930 metres, Andasibe Mantadia National Park, Madagascar

Alan Watson / Ground dwelling Tree frog (Mantidactylus sp.) Andasibe-Mantadia National Park, Madagascar

Inaki Relanzon / Small frog (Mantidactylus sp) Andasibe-Mantadia National Park, Central-East Madagascar

Inaki Relanzon / Small frog (Mantidactylus sp) Andasibe-Mantadia National Park, Central-East Madagascar

Inaki Relanzon / Mimethic frog (Mantidactilus sp) camouflaged amongst rainforest leaf litter, Zahamena National Park, Madagascar. October

Inaki Relanzon / Mimethic frog (Mantidactilus sp) camouflaged amongst rainforest leaf litter, Zahamena National Park, Madagascar. October

Inaki Relanzon / Mimethic frog (Mantidactilus sp) camouflaged amongst rainforest leaf litter, Zahamena National Park, Madagascar. October

Tim Laman / Ground frog, Crater Mountain Wildlife Management Area, Eastern Highlands Province, Papua New Guinea

Robert Valentic / Great barred frog {Mixophyes fasciolatus} male, Coffs Harbour, New South Wales, Australia

Robert Valentic / Tusked frog {Adelotus brevis} male calling for mate after heavy rains, Grafton, New South Wales, Australia

Robert Valentic / Painted burrowing frog {Neobatrachus pictus} male walking across sand dune after rain, Lucindale, South Australia

Robert Valentic / Painted burrowing frog {Neobatrachus pictus} Inglewood, Victoria, Australia

Robert Valentic / Woodworker / Carpenter frog {Megistolotis lignarius} male about to call for a mate from sandstone ledge in wet season, Kununurra, Western Australia

Robert Valentic / Salmon striped frog {Limnodynastes salmini} male at surface to breed after heavy rains, Brigalow habitat, Texas, Queensland, Australia

Michael & Patricia Fogden / Rain Frog (Breviceps sp) burrowing into ground, South Africa

Michael & Patricia Fogden / Mottled Shovel-nosed Frog (Hemisus marmoratus) burrowing into ground, South Africa

Inaki Relanzon / Ground dwelling frog (Mantidactylus sp.) on moss, Ranomafana National Park, Madagascar

Inaki Relanzon / Frog (Mantidactylus sp), Andasibe Mantadia National Park, Madagascar.

Inaki Relanzon / Frog (Mantidactylus sp), Nosy Mangabe, Northeast Madagascar.

Inaki Relanzon / Ground dwelling frog (Mantidactylus sp.) sitting on rock, Ranomafana National Park, Madagascar

Inaki Relanzon / Ground dwelling frog (Mantidactylus sp.) sitting on rock near water, Ranomafana National Park, Madagascar

Jouan & Rius / Mantidactylus frog in tropical rainforest, Nosy Mangabe NP, Madagascar

Jouan & Rius / Endemic frog (Mantidactylus liber) in rainforest, Andasibe Mantadia NP, Madagascar

Robert Valentic / Western banjo frog {Limnodynastes dorsalis} Western Australia

Robert Valentic / Desert frog / spade foot toad {Notaden nichollsi} Great sandy desert, Western Australia

Robert Valentic / Painted burrowing frog {Neobatrachus pictus} Kooyoora Park, Victoria, Australia

Robert Valentic / Giant banjo frog {Limnodynastes interioris} New South Wales, Australia

Robert Valentic / Woodworker frog {Megistolotis lignarius} male emerges in wet season to look for a mate, Kununurra, Western Australia

Nick Gordon / Unknown frog species well disguised in leaf litter, Amazonia, Brazil

Dave Watts / Eastern Banjo Frog (Limnodynastes dumerilli), Tasmania, Australia

Robert Valentic / Great barred frog {Mixophyes fasciolatus} Queensland, Australia

Robert Valentic / Eastern banjo frogs in amplexus {Limnodynastes dumerilli} Victoria, Australia

Robert Valentic / Male Eastern banjo frog {Limnodynastes dumerilli dumerilli} NSW, Australia

Robert Valentic / Female Sand frog {Heleioporus psammophilus} Western Australia

Robert Valentic / Gravid female Plains frog (Heleioporus inornatus) eggs visible through stomach, Western Australia

Robert Valentic / Salmon striped frog {Limnodynastes salmini} NSW, Australia

Pete Oxford / Ground dwelling frog (Mantidactylus sp) Ankarana special reserve, Madagascar

John Cancalosi / Eastern banjo frog burrowing in sand {Lymnodynastes dumerilii} Australia

Juan Manuel Borrero / Asian horned frog {Megophrys nasuta} camouflaged in leaf litter

John Cancalosi / Eastern banjo frog burrowing in sand {Lymnodynastes dumerilii} Australia

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

Pete Oxford / Ditch frog on tropical rainforest floor {Leptodactylus mystaceus} Iwokrama, Guyana.

Michael & Patricia Fogden / Northern Barred Frog (Mixophyes schevilli) in the rainforest, Kuranda State Forest, Queensland, Australia

Michael & Patricia Fogden / Northern Banjo Frog (Limnodynastes terraereginae) portrait, Queensland, Australia

Michael & Patricia Fogden / Northern Banjo Frog (Limnodynastes terraereginae) portrait, Queensland, Australia

Michael & Patricia Fogden / Woodworker Frog (Megistolotis lignarius ) in shallow water in cave, northern and western Australia

Michael & Patricia Fogden / Desert Spadefoot Toad (Notaden nichollsi), Uluru-Kata Tjuta National Park, Ayers Rock, Northern Territory, Australia

Michael & Patricia Fogden / Desert Spadefoot Toad (Notaden nichollsi), Uluru-Kata Tjuta National Park, Ayers Rock, Northern Territory, Australia

Michael & Patricia Fogden / Northern Spadefoot Toad (Notaden melanoscaphus) in water in tropical grassland, Kakadu National Park, Northern Territory, Australia

Michael & Patricia Fogden / Northern Barred Frog (Mixophyes schevilli) in the rainforest, Kuranda State Forest, Queensland Australia

Michael & Patricia Fogden / Northern Spadefoot Toad (Notaden melanoscaphus) in shallow water, Kakadu National Park, Northern Territory, Australia

Heidi & Hans-Juergen Koch / Asian Horned Frog (Megophrys nasuta) camouflaged against leaf litter on ground, native to tropical rainforests of Asia

Michael Quinton / Wood Frog (Rana sylvatica) on ground next to mushroom, boreal pond habitat, Alaska

Pete Oxford / Golden mantella frog {Mantella aurantiaca} Perinet Reserve, Madagascar - leaf litter

Tony Heald / Ground hornbill {Bucorvus leadbeateri} with frog prey Moremi WR, Botswana

Piotr Naskrecki / Ground Frog (Platymantis nakanaiorum), Nakanai Mountains, New Britain, Papua New Guinea

Piotr Naskrecki / Ground Frog (Platymantis nakanaiorum), New Britain Island, Papua New Guinea

Rod Williams / Blue poison arrow frogs (Dendrobates azureus) on wet ground. Occur in Surinam. June 2OO8, Captive.

Dr. Axel Gebauer / Chinese brown frog / Asiatic grass frog (Rana chensinensis) on hard ground. Koko Nor lake, Tso Ngonbo, Qinghai lake, Qinghai, Tibet, Amdo, China

Dr. Axel Gebauer / Chinese brown frog / Asiatic grass frog (Rana chensinensis) on hard ground. Koko Nor lake, Tso Ngonbo, Qinghai lake, Qinghai, Tibet, Amdo, China

PREMAPHOTOS / Red banded rubber frog (Phrynomerus bifasciatus) on the ground in the South African savanna

PREMAPHOTOS / Andean stone frog (Pleurodema marmorata) camouflaged against stony ground, at an altitude of 3800m in the Andes, Bolivia