For reasons of animal welfare, farmers can no longer keep pigs confined in stalls.

ECONOMIST: A pig of a problem

In the U.S., partly in response to complaints by animal-rights activists, handlers at slaughterhouses are supposed to keep pigs calm by moving them along in small groups, and the animals are required to be rendered unconscious and unable to feel pain before they are killed.

WSJ: What China Can Learn From America's Hot Dogs

If the family is rich enough, they may keep a couple of pigs underneath.

CNN: ASIANOW - TIME Asia | Visions of China: Mengla

Bidegain has to watch for big potholes left behind by the pigs to keep from damaging his tractor.

NPR: $1M Pilot Project Aims To Take Out Feral Pigs

For day-to-day maintenance, keep a lookout for beauty schools: they need guinea pigs, you get freebies.

BBC: Beauty treatments abroad

Cathy Rose, of the Chilterns Conservation Board, told BBC Radio 4's Today programme that rabbits, guinea pigs and smaller birds could be next on the menu if the public keep feeding the predatory birds.

BBC: Red kite