How about a story in which the dog is acting strangely, the owner takes the dog to the vet, the dog neatly disgraces the owner at the vet by getting filthy dirty before going in, refusing to let herself be weighed, and giving the vet a hard time about putting the thermometer in, only to have her owner be told $58 later that there wasn't actually anything wrong with her, and dogs can have off days too?

My first time owning a dog, and she's a 78-pound lab/heeler mix that is too damn smart for her own good. I swear, she rolled in the mud right before we went to the vet because she wanted to make me look bad. :P