The new owners of an elderly Yorkie-cross attend a dog first-aid training day where they learn some useful tips, including where to locate a pulse and how to perform canine CPR. In south London, Kate Fletcher rescues a dog from a house littered with drug paraphernalia, while Emma Stainthorpe takes part in a joint police and RSPCA raid on an illegal puppy farm in Durham. At West Hatch Animal Centre in Taunton, kennel supervisor Sue Dicks asks a specialist trainer to put a Staffie through its paces to see if it has got what it takes to become a police dog.