Harry the dog

You are an anthropomorphic golden retriever dog in the police force and Harry is your boyfriend. One day while off duty you and he go to the new doughnut shop in town, you got a jam doughnut and Harry got one of the owner's original recipe doughnuts. When you both ate your doughnuts, Harry fattened up until half of his belly was showing, despite the random transformation he actually enjoys being fat and you're secretly a chubby Chaser.