Ingo Arndt / Close up foot of Double crested basilisk {Basiliscus plumifrons}

Ingo Arndt / Close up of foot of Chimpanzee {Pan troglodytes} note opposable toe

Ingo Arndt / Close up of foot of Slender loris {Loris tardigradus}

Ingo Arndt / Close up of foot of European mole {Talpa europaea}

Ingo Arndt / Close up of foot of Chimpanzee {Pan troglodytes} opposable toe

Ingo Arndt / Close up of underside / sole of human foot {Homo sapiens}

Ingo Arndt / Close up of foot of Red footed tortoise {Geochelone carbonaria}

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

Ingo Arndt / Close up webbed foot of Kuhl's gecko {Ptychozoon kuhli}

Ingo Arndt / Close up foot of Madagascan day gecko {Phelsuma madagascariensis}

Ingo Arndt / Close up foot of Tokay gecko {Gekko gecko}

Dong Lei / Giant panda (Ailuropoda melanoleuca) close up of paw showing sixth toe, Chengdu Research Base of Giant Panda Breeding, Chengdu City, Sichuan Province, China.