now on bbc news, bbc wales investigates the hidden world of designer dog breeding. good boy. you have been such a good boy! iwant good boy. you have been such a good boy! i want are known as micro bullies. they are bred to be really, really small. these were all seized from a breeder. there were reports of unlicensed breeding. that is a boy! meet chris, lined up to become a stud dog by his owner. he actually has spinal deformity. he is dragging his hind legs, probably every four or five steps. the vet report we got from the specialist about said he should be bred from. the whole purpose of the breed is to try and make them small and stocky as possible. lots of muscle and bone into a very, very small frame. their legs are splayed out, they are so must we. it is cruelty breeding, there is no other word for it. griff and the other pups are being looked after at the south wales rescue centre. casualties of afraid in designer dogs. the centre. casualties of afraid in designer dogs