Klein & Hubert / Ewe with twin lambs in meadow in spring. France.

Laurie Campbell / Black-faced sheep (Ovis domesticus) ewe with lamb, Lanarkshire, Scotland, April

Brent Stephenson / Domestic Sheep (Ovis aries) ewe and two lambs, probably Romney x Perendale. Unshorn. Cape Kidnappers, Hawkes Bay, New Zealand, September.

Diane McAllister / Female Rocky Mountain bighorn sheep ewe (Ovis canadensis canadensis) warning her newborn lamb that a rocky ledge is too close and dangerous. She places her front hoof on the baby's back, stopping it f...

Ernie Janes / Domestic sheep, ewe with two lambs, running, Norfolk, UK, March

Colin Seddon / Jacob sheep {Ovis aries} ewe standing in a field, UK.

Colin Seddon / Crossbred ewe and lamb - domestic sheep {Ovis aries} Shetland Is, Scotland, UK

Donald M. Jones / Bighorn Sheep (Ovis canadensis) ewe and ram, western Montana

Michael Quinton / Dall's Sheep (Ovis dalli) ram, lamb, and ewe, Yukon Territory, Canada

Donald M. Jones / Bighorn Sheep (Ovis canadensis) rams, ewe, and lamb, western Canada

Donald M. Jones / Bighorn Sheep (Ovis canadensis) ewes and lambs grazing, western Canada

Sumio Harada / Bighorn Sheep (Ovis canadensis) rams pursuing ewe in snowstorm, Glacier National Park, Montana

Donald M. Jones / Bighorn Sheep (Ovis canadensis) ram and ewe during rut, Montana

Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ewes in desert habitat, southern Nevada

Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ewes in desert habitat, southern Nevada

Donald M. Jones / Desert Bighorn Sheep (Ovis canadensis nelsoni) ewe and lamb, Zion National Park, Utah

Terry Whittaker / RF - Domestic sheep, ewe with lamg, along the coast on the Langanes peninsula, northeast Iceland. May. (This image may be licensed either as rights managed or royalty free.)

Terry Whittaker / Ewe suckling lamb along coast of Langanes peninsula, northeast Iceland. May.

Terry Whittaker / Ewe with lambs along coast of Langanes peninsula, northeast Iceland. May.

Terry Whittaker / Ewe and lambs, Langanes peninsula, northeast Iceland. May.

Terry Whittaker / Ewe and lambs, Langanes peninsula, northeast Iceland. May.

Terry Whittaker / Ewe and lambs, Langanes peninsula, northeast Iceland. May.

Nick Upton / Common starlings (Sturnus vulgaris) foraging for insects around grazing Welsh mountain sheep (Ovis aries) on pastureland, Somerset Levels, UK, January.

Nick Upton / Hebridean sheep (Ovis aries) ram showing flehmen response as it smells nearby ewe in meadow, Rutland Water, Rutland, UK, November.

Nick Upton / Hebridean sheep (Ovis aries) ram approaching an ewe in meadow, Rutland Water, Rutland, UK, November.

Loic Poidevin / Cameroon sheep, ewe with day old lamb, Marsh of Ile d'Olonne, Vendee, France,

Loic Poidevin / Cameroon sheep, female and lambs, age one day, Ile d'Olonne Marsh, Vendee, France, January.

Ashley Cooper / Milking sheep on a farm in Lazonby, Cumbria, England, UK, August.

Ashley Cooper / Sheep in a field in Grasmere in snow, Lake District National Park, England, UK, January.

Dong Lei / Bluesheep (Pseudois nayaur) ewe and lamb, Sanjiangyuan National Nature Reserve, Qinghai Hoh Xil UNESCO World Heritage Site, Qinghai-Tibet Plateau, Qinghai Province, China.

Philippe Clement / White sheep, ewe sniffing at her dead lamb in meadow in spring, Scotland, UK, June

Chris Mattison / Saltmarsh sheep, ewe with lamb, Gower Peninsula, Glamorgan, South Wales, UK, June.

Chris Mattison / Saltmarsh sheep, ewe with lamb, Gower Peninsula, Glamorgan, South Wales, UK, June.

Ernie Janes / Kerry Hill domestic sheep, ewe and lambs England, UK.

Ernie Janes / Kerry Hill domestic sheep, ewe and lamb. England, UK.

Phil Savoie / Domestic sheep ewe and lamb in pasture, Monmouthshire, Wales, UK, April.

Phil Savoie / Domestic sheep ewe and lambs in pasture, Monmouthshire, Wales, UK, April.

Phil Savoie / Badger-faced domestic sheep, ewe with lambs, Monmouthshire, Wales, UK, March.

Loic Poidevin / Cameroon ewe and lamb, Marsh of Ile d'Olonne, Vendee, France, January.

Loic Poidevin / Cameroon ewe and lamb, Marsh of Ile d'Olonne, Vendee, France, January.

Philippe Clement / Heidschnucke ewe, moorland sheep breed from northern Germany, grazing in field, October.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) looking at dead lamb, Carmarthenshire, Wales, UK. March.

Dave Bevan / Welsh mountain sheep (Ovis aries) lamb standing 20 minutes after birth, searching for udder, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) feeding after birth, with lamb resting nearby, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) eating birth membrane whilst lamb struggles to stand up, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) eating birth membrane whilst lamb shakes fluid from nose and ears, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) giving birth and removing membrane from lambs face to allow it to breathe, Carmarthenshire, Wales, UK. March.

Dave Bevan / Female Welsh mountain sheep (Ovis aries) eating birth membrane, removing it from lamb, Carmarthenshire, Wales, UK. March.