Michael Pitts / Saltwater crocodile underwater {Crocodylus porosus} Kakadu NP, NT, Australia

Warwick Sloss / Mudcrab {Scylla serrata} amongst mangroves at low tide, Darwin, NT, Australia

Warwick Sloss / Mudcrab {Scylla serrata} amongst mangroves at low tide, Darwin, NT, Australia

Warwick Sloss / Mudcrab {Scylla serrata} amongst mangroves at low tide, Darwin, NT, Australia

Staffan Widstrand / Arctic fox on snow {Vulpes lagopus} Ellesmere, NorthernTerritory, Canada.

Staffan Widstrand / Arctic fox on snow. {Vulpes lagopus} Ellesmere Northern territory, Canada.

Staffan Widstrand / Arctic fox portrait {Vulpes lagopus} Ellesmere Northern territory, Canada.

Colin Varndell / Blue tit brings caterpillar to young in nestbox {Parus caeruleus} UK

Michael Pitts / Saltwater crocodile hatchling on adult's head {Crocodylus porosus} NT, Australia

Dietmar Nill / Marsh harrier {Circus aeruginosus} Germany

Colin Varndell / Common buzzard feeding on rabbit prey {Buteo buteo} UK

David Kjaer / Muntjac deer male, Norfolk, England, UK

David Kjaer / Muntjac deer female, Norfolk, England, UK

Colin Varndell / European beech trees (Fagus sylvatica) in Lady's Walk, Ashridge Estate, UK, November

Robin Chittenden / Sandwich tern (Sterna sandvicensis) flying with fish in beak, Blakeney Point NT, Norfolk, UK, July

Ross Hoddinott / Close-up of male Sand Lizard (Lacerta agilis). Studland (NT), near Swanage, Dorset, UK, April.

Robert Valentic / D - Olive whipsnake, male {Demansia olivacea} NT, Australia

Robert Thompson / Bee moth (Aphomia sociella) resting on oak branch, Crom Estate (NT) County Fermanagh, Northern Ireland, UK, June

Stephen Dalton / Caterpillar larva of unidentified moth, Kaziranga NT, Assam, India

Ross Hoddinott / Himalayan / Indian balsam {Impatiens balsamifera} plant in flower. Invasive species and difficult to control / manage due to the ways its seed heads explode to spread the plant. Parke (NT) Bovey Tracy...

Ross Hoddinott / Baling straw into circular bales on stubble field, Pentire Point (NT), near Polzeath, Cornwall, UK

Ross Hoddinott / Sandymouth bay (National Trust) at low tide, Cornwall, UK, with pools in sand left by retreating tide

Tony Phelps / Researcher handling Albany adder {Bitis albanica} Grassy Ridge, nt Port Elizabeth, South Africa.

Nigel Tucker / Stick insect (Extatosoma bufonium) Queensland, Australia

Hanne & Jens Eriksen / Three Bar-shouldered doves {Geopelia humeralis} drinking, Kakadu National Park, NT, Australia

Jeff Rotman / Saltwater crocodile {Crocodylus porosus} leaping out of water for bait, Adelaide river, NT, Australia

Jeff Rotman / Warning signs for Saltwater crocodiles {Crocodylus porosus} Adelaide river, NT, Australia

Angelo Gandolfi / Tropical rainforest around Billabong under Arnhemland escarpment, NT, Australia

Nigel Tucker / Mueller's stag beetle/ Rainbow stag beetle (Phalacrognathus muelleri) Queensland, Australia

WILLIAM OSBORN / Fleshy groundsel in flower (Senecio gregorii) Simpson Desert, Northern Territory, Australia

WILLIAM OSBORN / Pandanus palms on banks of South Alligator River, Kakadu NP, Northern Territory, Australia

Robert Valentic / Northern spiny tailed gecko {Diplodactylus / Strophurus ciliaris ciliaris} NT, Australia

Robert Valentic / Giant cave gecko {Pseudothecadactylus lindneri lindneri} Kakadu NP, NT,

Robert Valentic / Gravid female Giant cave gecko {Pseudothecadactylus lindneri lindneri} NT, Australia

Robert Valentic / Inland bearded dragon, male threat display {Pogona vitticeps} NT, Australia

Nigel Tucker / Madagascar fruit bats in flight {Pteropus rufus} Madagascar

Nigel Tucker / Herd of Przewalski horse {Equus ferus przewalski} captive, Ukraine

Nigel Tucker / Giant / Duvaucel's gecko (Hoplodactylus duvauceli) Poor Knight's Island, New Zealand

Staffan Widstrand / Arctic fox on snow {Vulpes lagopus} Ellesmere Is, NT, Canada Northern territory.

Nigel Tucker / Baboons and Marabou storks feeding at rubbish tip, Tsavo NP, Kenya

Ross Hoddinott / Wheal Coates (NT) disused tin mine along coast near St Agnes, Cornwall, UK

Ross Hoddinott / Wheal Coates (NT) disused tin mine and heather, along coast near St Agnes, Cornwall, UK

Nigel Tucker / Gannet in flight (Morus bassanus) Scotland Bass Rock

Steven David Miller / Mitchell's water monitor {Varanus mitchelli} Darwin, NT, Australia Northern Terrritory

Staffan Widstrand / Arctic fox on snow {Vulpes lagopus} Ellesmere, Northern Territory, Canada.

Staffan Widstrand / Arctic Wolf {Canis lupus} Ellesmere Island, NT, Canada.

Warwick Sloss / Perentie / Giant monitor lizard {Varanus giganteus} catpive, NT, Australia

Warwick Sloss / Frilled lizard displaying {Chlamydosaurus kingii} captive, NT, Australia.

WILLIAM OSBORN / Spinifex pigeons feeding on ground {Petrophassa plumifera} NT, Australia

Staffan Widstrand / Arctic hare on snow with long shadow {Lepus arcticus} Ellesmere Is, NT, Canada.

Dave Watts / Black necked stork {Ephippiorhynchus asiaticus} Kakadu NP, NT, Australia.

Dave Watts / Budgerigar at nest hole {Melopsittacus undulatus} Simpson desert, NT, Australia.

Staffan Widstrand / Arctic fox on snow, evening light {Vulpes lagopus} Ellesmere Northern territory, Canada.

Patricio Robles Gil / Black footed rock wallaby {Petrogale lateralis} Alice Springs, NT, Australia.

Warwick Sloss / Perentie / giant monitor lizard {Varanus giganteus} catpive, NT, Australia

Dave Watts / Spectacled hare wallaby {Lagorchestes conspicillatus} NT, Australia, captive

Dave Watts / Male Frilled lizard displaying {Chlamydosaurus kingii} NT, Australia

Dave Watts / Australian freshwater crocodile {Crocodylus johnsoni} NT, Australia. Northern Territory

Warwick Sloss / Perentie / Giant monitor lizard {Varanus giganteus} catpive, NT, Australia

Colin Varndell / Whitethroat singing {Sylvia communis} UK

WILLIAM OSBORN / Cathedral termite mound {Nasutitermes triodiae} with woman standing next to it for size. Kakudu NP, NT, Australia

Nigel Tucker / Greengrocer Cicada, Queensland, Australia. Note transparent wings

Robert Valentic / Rugose Death Adder (Acanthophis rugosus) male subadult, NT, Australia

Robert Valentic / Rugose Death Adder (Acanthophis rugosus) adder giving birth, NT, Australia

Robert Valentic / Desert death adder with distended body {Acanthophis pyrrhus} NT, Australia juvenile

Robert Valentic / Adult male King brown snake, strike pose {Pseudechis australis} NT, Australia

Michael Pitts / Saltwater crocodile underwater {Crocodylus porosus} Kakadu NP, NT, Australia

WILLIAM OSBORN / Limestone escarpment and Ghost gum tree {Eucalyptus papuana} Birds Australia reserve,

Steven David Miller / Granite boulders at sunrise, Devils Marbles Conservation Reserve, NT, Australia Northern

Nigel Tucker / Grevy zebra and foal {Equus grevyi} Buffalo Springs, Kenya, East Africa

Nigel Tucker / Elephant recorded by microphone. Bristol Zoo

Nigel Tucker / Rockhopper penguin recorded by microphone. Bristol Zoo

Nigel Tucker / Razorbills, Isle of May, Scotland

Nigel Tucker / Lion {Panthera leo} female grooming juvenile, Masia Mara, Kenya, East Africa.

Nigel Tucker / Male Nubian ibex {Capra ibex} Israel, Middle East

Dave Watts / Red collared rainbow lorikeet {Trichoglossus haematodus rubritorquis} Australia, Northern Territory

Steven David Miller / Aboriginal rock art, human stick figure & weapon, Ubirr Art Site Kakadu NP, NT Australia

Steven David Miller / Aboriginal rock art, kangaroo X-ray style rock art Ubirr Art Site Kakadu NP, NT Australia

Nigel Tucker / Rockhopper penguin {Eudyptes chrysocome} investigating sound recording microphone, Bristol Zoo, UK

Nigel Tucker / Magnetic Termite mound (Isoptera) Litchfield NP Australia.

Robert Valentic / Northern death adder snake giving birth {Acanthophis praelongus} NT, Australia

Robert Valentic / Olive whipsnake, male {Demansia olivacea} NT, Australia

Robert Valentic / Hooded scaly foot (legless lizard) {Pygopus nigriceps} mimics Brown snake. NT Australia

Robert Valentic / Northern death adder newborn snakes in birth sac {Acanthophis praelongus} NT,

Robert Valentic / Western brown snake, strike pose, female {Pseudonaja nuchalis} NT, Australia Northern

Robert Valentic / New species of King brown snake {Pseudechis sp} NT, Australia

Robert Valentic / Northern death adders mating {Acanthophis praelongus} NT, Australia

Nigel Tucker / Indian rhinoceros {Rhinoceros unicornis} Pakistan