Fossilised bones including hind leg of Sauropod and Apatosaurus, Dinosaur National Monument, Colorado and Utah, United States of America, North America

Swimming Crab (Liocarcinus depurator), legs spread out, viewed from above showing swimmerettes on hind legs, sandy seabed, St Abbs, Scotland, UK North Sea

Brown bear (Ursus arctos) standing on hind legs in tall grass, her cub sitting in front of her, Lake Clarke National Park, Alaska, USA, North America

Camargue horses (Equus caballus) stallions fighting in water, Saintes-Marie-de-la-Mer, Camargue, France, Europe

Camargue horses (Equus caballus) stallions fighting in water, Saintes-Marie-de-la-Mer, Camargue, France, Europe

Camargue horses (Equus caballus) stallions fighting in water, Saintes-Marie-de-la-Mer, Camargue, France, Europe

Camargue horses (Equus caballus) stallions fighting in water, Saintes-Marie-de-la-Mer, Camargue, France, Europe

Camargue horses (Equus caballus) stallions fighting in water, Saintes-Marie-de-la-Mer, Camargue, France, Europe

Camargue horses (Equus caballus) stallions fighting in water, Saintes-Marie-de-la-Mer, Camargue, France, Europe

Brown Bear (Ursus arctos) laying on the ground, stretching its hind legs

Red fox ( Vulpes vulpes) stands on the hind legs of a sea buckthorn hedge, Netherlands

Brown bear (Ursus arctos) standing on its hind legs in the water with a freshly caught salmon in its mouth, Lake Clarke National Park, Alaska, USA, North America

2 Zebras (Equus burchelli) are fighting in the savannah. Both animals stand on their hint legs biting each other. Etosha National Park, Namibia, Africa

Brown bear (Ursus arctos) standing on hind legs up to chest in water and looking at camera, Lake Clarke National Park, Alaska, USA, North America

Dallatana cellars where the precious culatello is seasoned, similar to cured ham but made from the filet or loin of the hind leg, Roncole Verdi, Busseto, Emilia Romagna, Italy, Europe

Dallatana cellars where the precious culatello is seasoned, similar to cured ham but made from the filet or loin of the hind leg, Roncole Verdi, Busseto, Emilia Romagna, Italy, Europe

Dallatana cellars where the precious culatello is seasoned, similar to cured ham but made from the filet or loin of the hind leg, Roncole Verdi, Busseto, Emilia Romagna, Italy, Europe

Dallatana cellars where the precious culatello is seasoned, similar to cured ham but made from the filet or loin of the hind leg, Roncole Verdi, Busseto, Emilia Romagna, Italy, Europe

African bush elephant (Loxodonta africana) standing on the savannah while nursing young calf at Segera, Segera, Laikipia, Kenya

An impala calf, Aepyceros melampus, turns and licks its hind leg, hind leg raised, Sabi Sands, Greater Kruger National Park, South Africa