Sheep and mountains near Glenorchy, Queenstown, South Island, New Zealand, Pacific

A herd of sheep grazing in the winter snow near Delamere Forest, Cheshire, England, United Kingdom, Europe

Bighorn sheep (Ovis canadensis) ram during the rut, Arapaho National Forest, Colorado, United States of America, North America

Male dall sheep (Ovis dalli), Denali National Park, Alaska, United States of America, North America

A herd of Swaledale sheep walking along a path on a hillside in the Forest of Bowland in Lancashire, England, United Kingdom, Europe

Grazing of sheep in the meadows with a white dog in autumn, Soglio, Bregaglia valley, Graubunden, Switzerland, Europe

Bighorn sheep ram (Ovis canadensis), Banff National Park, Alberta, Canada, North America

Sheep walk on the road near a mountan village, Val Bodengo, Valchiavenna, Valtellina, Lombardy, Italy, Europe

Flock of sheep and lambs, Nucsoara, Arges County, Muntenia, Romania, Europe

Rocky mountain bighorn sheep (Ovis canadensis) on a wintry mountain, Jasper National Park, UNESCO World Heritage Site, Alberta, Canadian Rockies, Canada, North America

Rocky mountain bighorn sheep female (Ovis canadensis) on a wintry mountain, Jasper National Park, UNESCO World Heritage Site, Alberta, Canada, North America

Rocky mountain bighorn sheep (Ovis canadensis) lamb on a wintry mountain, Jasper National Park, UNESCO World Heritage Site, Alberta, Canadian Rockies, Canada, North America

Bighorn sheep petroglyph, Petrified Forest National Park, Arizona, United States of America, North America

Bighorn sheep ram (Ovis canadensis), Banff National Park, Alberta, Canada, North America

Male stone sheep (Ovis dalli stonei), Stone Mountain Provincial Park, British Columbia, Canada, North America

Bighorn sheep ram (Ovis canadensis), Banff National Park, Alberta, Canada, North America

Sheep and lambs above Lathkill Dale, view to Youlgreave (Youlgrave), spring, Peak District National Park, Derbyshire, England, United Kingdom, Europe

Sheep grazing in a field with the hills of the Forest of Bowland in Lancashire under a dramatic sky, Lancashire, England, United Kingdom, Europe

Sheep on rocky outcrops of Forest of Harris, North Harris, Outer Hebrides, Scotland, United Kingdom, Europe

A young boy holds up lamb from his flocks sheep in Eucalyptus grove, Kinigi, Rwanda.

Rural scenery near Dufftown, Aberdeenshire, Scotland

sheep feeding under olive trees, Samothraki island, Thrakia, Greece

Forest sheep, lamb being suckled by mother, Germany, Europe

Purebred Thuringian Forest Goat baying in front of Pomeranian Coarsewool Sheep, Roegnitz, Mecklenburg-Western Pomerania, Germany, Europe

Purebred Thuringian Forest Goat in front of Pomeranian Coarsewool Sheep, Roegnitz, Mecklenburg-Western Pomerania, Germany, Europe

Forest sheep, lamb with mother grazing on a pasture, Germany, Europe

Forest sheep, three lambs with mother grazing on a pasture, Germany, Europe

Forest sheep, two lambs lying on a pasture, Germany, Europe

Forest sheep, flock of sheep, lambs on a pasture, Germany, Europe

Forest sheep, lamb lying in a pasture, Germany, Europe

Sheep in the light of the evening sun, Gechingen, Black Forest, Germany, Europe

Sheep in the light of the evening sun, Gechingen, Black Forest, Germany, Europe

Sheep in the light of the evening sun, Gechingen, Black Forest, Germany, Europe

Sheep in the light of the evening sun, Gechingen, Black Forest, Germany, Europe

Sheep in the light of the evening sun, Gechingen, Black Forest, Germany, Europe

Ram (Ovis) in winter

Ram (Ovis) in winter

Morning Mist, Co Wicklow, Ireland

Matanuska Glacier Viewed From Glenn Highway Near Sheep Mountain, Colourful Summer Foliage Surrounding The Glacier, Alaska, United States Of America

The Aurora Glows Over A Moose Crossing Sign Along Sheep Creek Road, Fairbanks, Alaska, United States Of America

Dall Sheep ram (ovis dalli), captive, Yukon Territory, Canada

Bighorn Sheep (Ovis Canadensis), Banff National Park, Alberta, Canada

Stone sheep (Ovis dalli stonei) jumping over barrier along the Alaska Highway, British Columbia, Canada

Stone Sheep (ovis dalli stonei), captive, Yukon Territory, Canada

Glencar Lake, County Sligo, Ireland

Bighorn Sheep (Ovis Canadensis), Banff National Park, Alberta, Canada

Flock of sheep on hillside ahead of Trailing of the Sheep Festival

Flock of sheep and Pyrenean Mountain Dog in late summer, Valley of St. Paul Salers (Recusset), Monts du Cantal, Regional Natural Park of Auvergne Volcanoes, France

Black pigs in dehesa in Estramadura, Spain. A dehesa is an agro-sylvo-pastoral mode of cultivation formed by a sparse undergrowth grazing where pigs or sheep graze freely and where green or cork oaks grow, cut and exploited. This very old system persists in the poor and dry areas of the Mediterranean basin and covers several million hectares in the Iberian Peninsula.