In an extraordinary conversation, the legendary Paxo on his love for his pet dog Derek and admiration for Princess Anne and his pet hates too - litter louts, former Prime Ministers and Derek licking his face. Except Jeremy always lets Derek lick his face. Life is complicated. Plus Professor Claudio Sillero, world expert on wild dogs. Do they like tummy rubs? Would they lick your face? What does the dog on the tundra tell us about the dog on the sofa?