The case of Louie the pig makes gender confusion in humans seem so trivial. The nine-month-old pot-bellied pig is so convinced he’s part of a dog pack he happily trots through tunnels, leaps over jumps and weaves between poles just like a dog. A celebrated performer at agricultural shows, Louie plays fetch and even responds to his name – all very unusual characteristics in a pig. The ginger biscuit loving pig has been welcomed with open paws by his canine colleagues.