David Woodfall / Cheviot sheep grazing eroding machair at front of sand dunes, North Uist, Scotland, UK, June.

Philippe Clement / Shetland sheep ruminating on sea cliff, Hermaness NNR, Unst, Shetland Islands, Scotland, UK, May.

Guy Edwardes / Pilsdon Pen and Marshwood Vale in morning mist, Quarr Hill, Dorset, England, UK. May 2014.

Dave Bevan / Welsh mountain sheep cleaning afterbirth from a lamb before a second lamb is born, Carmarthenshire, Wales, UK, March.

Nick Garbutt / Urial sheep (Ovis vignei) herd running across steep barren slopes. Himalayas near Ulley, Ladakh, India.

Ingo Arndt / Racka sheep herd {Ovis aries} rare breed from Hungary

Niall Benvie / Black faced sheep ram with twisted horns, Mull, Scotland, UK. January.

Alex Hyde / Sheep sheltering from harsh weather behind a stone wall, Peak District National Park, Derbyshire, UK. March.

Roger Powell / Cattle egret (Bubulcus ibis) perched on the back of a sheep, with another on the ground, Castro Verde, Alentejo, Portugal, April.

Ernie Janes,Ernie Janes / Lambs in meadow in spring, UK, April

Ernie Janes / Spring lambs in meadow, UK, April

Will Watson / Black Welsh Mountain sheep portrait, Herefordshire, UK