Ernie Janes / Free range Domestic pig (Sus scrofa domesticus) four piglets at four weeks, UK, July 2010

Ernie Janes / Free range Domestic pig (Sus scrofa domesticus) piglets play fighting, UK, August 2010

Konrad Wothe / Domestic Pig (Sus scrofa domesticus) on grassy lawn, Germany

Heidi & Hans-Juergen Koch / Domestic Pig (Sus scrofa domesticus) nose, Borken, North Rhine-Westphalia, Germany

Daniel Heuclin / Mangalitza / sheep pig (Sus scrofa domesticus) breed from Hungary.

Konrad Wothe / Domestic Pig (Sus scrofa domesticus) mother and piglet, Panguana Nature Reserve, Peru

Cyril Ruoso / Domestic Pig (Sus scrofa domesticus) sow with young at free range pig breeding facility in France

Ernie Janes / Free range Domestic pig (Sus scrofa domesticus) rear view of ten piglets suckling from sow, UK, August 2010

Ernie Janes / Free range Domestic pig (Sus scrofa domesticus) three piglets in wallow bath, UK, July 2010

Ernie Janes / Free range Domestic pig (Sus scrofa domesticus) nine piglets in a huddle, UK, August 2010

Ernie Janes / Free range Domestic pig (Sus scrofa domesticus) piglets play fighting, UK, August 2010

Ernie Janes / Free range Domestic pig (Sus scrofa domesticus) piglets play fighting, UK, August 2010