Ingo Arndt / Orang utan hand holding branch close-up {Pongo pygmaeus abelii} Sumatra, Indonesia

Fiona Rogers / Bornean Orang-utan (Pongo pygmaeus wurmbii) female 'Siswi's' hand holding foot close-up. Camp Leakey, Tanjung Puting National Park, Central Kalimantan, Borneo, Indonesia, June 2010. Rehabilitated and...

Edwin Giesbers / Close up face portrait of male Orang Utan (Pongo pygmaeus) Captive, Netherlands

Sue Flood / Woman tourist relaxing in hammock on tropical beach, Deadman's Bay, Peter Island, British Virgin Islands, April 2008, Model released

Norbert Wu / Small-toothed Rock Hyrax (Heterohyrax brucei) group lounging around pool at Mara Serena lodge, closest living relative of the Elephant, feet possess hoof-like nails, Kenya

Alex Hyde / Front flipper of Southern Elephant Seal bull (Mirounga leonina) showing the five nails and webbing between each digit. King Haakon Bay, South Georgia. November.

David Perpinan / Overgrown claw damaging the foot pad in a captive jaguar (Panthera onca)

David Woodfall / Sweat bee (Halictidae) nest hole marked with nails by scientific researchers. Knepp Wildland Project, formerly intensive farmland now turned to conservation and sustainable farming. Horsham, West Suss...

Ingo Arndt / Mountain gorilla (Gorilla gorilla berengei) close up of left hand, Parc des Volcans, Rwanda

Laurent Geslin / Close up of paw of Eurasian beaver {Castor fiber} France

Laurent Geslin / Close up of front paw of Eurasian beaver {Castor fiber} France

Roland Seitre / Brown-throated Three-toed Sloth (Bradypus variegatus) claws around a branch; effective both as climbing-hooks and as defensive weapons against the sloths' main predator, the jaguar. Captive. Aviarios...

Bryan and Cherry Alexander / Rear flipper and toenails on a young bull Walrus (Odobenus rosmarus) on the beach at Torellneset on Nordaustlandet. Svalbard, Norway, June.

Ernie Janes / Woman holding and clipping the nails of a Jack Russell terrier, UK

Bryan and Cherry Alexander / Kakivak, an Inuit fish spear made from antler, nails and sinew according to an ancient design, Canada.

Stephen Dalton / False black widow spider (Steotoda bipunctata) on screw head, UK, Theridiidae

Mark Bowler / Human botfly larvae (Dermatobia hominis) recently removed from a person's skin, on fingernail, Amazon Rainforest, Loreto, Peru

Yukihiro Fukuda / Japanese macaque / Snow monkey {Macaca fuscata} close up of digits on right hand, Jigokudani, Nagano, Japan

TJ Rich / Mountain gorilla {Gorilla berengei berengei} cleaning / biting nails, Parc des Volcans NP, Rwanda

Jane Burton / Clipping the front toe nails of an Agouti-hooded Rat {Rattus sp}, Model released

Jane Burton / West highland white terrier having nails clipped

Suzi Eszterhas / Close up of nails on fore flipper of Californian Sealion {Zalophus californianus} California, USA.

Philippe Clement / Warning sign on road in Denali NP, chewed by grizzly bears and exposing nails, Alaska, USA.

Nick Garbutt / Close up of chained foot of Indian elephant {Elephas maximus} India

Nick Garbutt / Close-up of underside of foot of Indian elephant {Elephas maximus} Kanha NP, India

Nick Garbutt / Close up of chained foot of Indian elephant {Elephas maximus} India

Nick Garbutt / Close-up of foot of Indian elephant {Elephas maximus} captive, India

Norbert Wu / Small-toothed Rock Hyrax (Heterohyrax brucei) group lounging around pool at Mara Serena lodge, closest living relative of the Elephant, feet possess hoof-like nails, Kenya

Norbert Wu / Small-toothed Rock Hyrax (Heterohyrax brucei) group lounging around pool at Mara Serena lodge, closest living relative of the Elephant, feet possess hoof-like nails, Kenya

Ashok Jain / Nails and paws of Tigers and Leopards on sale. Delhi India Roadside Market

Neil Lucas / Close up of Indian elephant foot {Elephas maximus} Thailand

Vivek Menon / Elephant nail trap for rering elephant lame {Elephas maximus} South India

Ashok Jain / Nails and paws of Tigers and Leopards for sale Delhi India