Jo-Anne McArthur / We Animals / One piglet from a large litter looks around her small crate as her mother lies immobile beside her. Sows are kept in gestation crates and then farrowing crates in industrial farms, which is the standa...

Klein & Hubert / Braunvieh cow in alpine meadow, trying to lick camera with tongue. Austria.

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

Klein & Hubert / Piglet swimming in turquoise sea. Bahamas.

Klein & Hubert / Piglet discovering a starfish on an island beach, Bahamas.

Klein & Hubert / Piglet swimming in turquoise sea. Bahamas.

Guy Edwardes / Highland Cattle, Glen Nevis, Lochaber, Scotland, UK, June.

Klein & Hubert / Blacknosed Valais sheep on alpine meadow in autumn, Switzerland.

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

Klein & Hubert / Domestic Tamworth piglets in meadow, Germany

Klein & Hubert / Domestic Tamworth piglet in meadow in spring, close up of snout / nose, Germany

Klein & Hubert / Ferrandaise cow, seen between the legs of another, Auvergne, France.

Klein & Hubert / Limousin cow and bull, Auvergne, France.

Klein & Hubert / Limousin cow and calf, France.

Klein & Hubert / Aubrac bull portrait, France

Klein & Hubert / Large white x Pietrain pig in meadow, France

Klein & Hubert / Large white x Pietrain young pigs foraging in a meadow in summer, France

Klein & Hubert / Large white x Pietrain pigs, in meadow, France

Klein & Hubert / Domestic Tamworth pig, nose close up, digging in earth, portrait, Germany.

Klein & Hubert / Domestic Berkshire pig feeding in meadow in spring, Germany

Klein & Hubert / Domestic Berkshire pig feeding in meadow in spring, Germany

Klein & Hubert / Domestic Tamworth x Berkshire pig in meadow in spring, Germany.

Klein & Hubert / Domestic Tamworth pig, sow and piglets in forest. Germany

Klein & Hubert / Domestic Tamworth x Berkshire pig in meadow in spring, Germany

Klein & Hubert / Domestic Tamworth pig, piglets sleeping. Germany.

Klein & Hubert / Domestic Berkshire pigs feeding in meadow in spring, Germany

Klein & Hubert / Boer goat (Capra aegagrus hircus) head portrait of kid looking through wooden fence, Germany.

Klein & Hubert / Herd of Rove goats (Capra aegagrus hircus) walking to feeding grounds, Provence, France.

Klein & Hubert / Outdoor free range domestic pig (Sus scrofa domesticus) walking in mud, Germany.

Klein & Hubert / Organic free range domestic Pig (Sus scrofa domesticus) using comfort brushes, Germany.

Klein & Hubert / Head portrait of young domestic Landrace pig (Sus scrofa domesticus), organic open air breeding, Germany.

Klein & Hubert / Organic free range domestic Landrace pig (Sus scrofa domesticus) running in autumn pasture, Germany.

Klein & Hubert / Organic free range domestic Landrace pig (Sus scrofa domesticus) running in autumn pasture, Germany.

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

Niall Benvie / Highland cow portrait, Mull, Scotland, UK, January.

Klein & Hubert / Two pygmy goat kids play fighting, head butting, on a bench, France.

Klein & Hubert / Porc Blanc de l'Ouest domestic pig with staples on nose to prevent him from digging, in free free range organic farm, France.

Klein & Hubert / Porc Blanc de l'Ouest / Western white domestic pig (Sos scrofa domesticus) resting in mud, close up of snout and ears, free range organic farm, France.

Klein & Hubert / Piglet (Sus scrofa domestica) Turopolje crossed with Duroc x Bentheimer, age one month, in snow.

Klein & Hubert / Piglet (Sus scrofa domestica) Turopolje crossed with Duroc x Bentheimer, age one month, in snow. Germany.

Klein & Hubert / Duroc x Bentheimer domestic pig boar in snow.

Klein & Hubert / Duroc x Bentheimer domestic pig boar, portrait.

Klein & Hubert / Two piglets (Sus scrofa domestica) Turopolje crossed with Duroc x Bentheimer, age one month, playing in snow, Germany.

Klein & Hubert / Piglet (Sus scrofa domestica) Turopolje crossed with Duroc x Bentheimer, age one month, in snow. Germany.