Two dogs, a Doberman and a German Shepherd, are in the vet's waiting room, and the German Shepherd says to the other "What are you in for?"

"Oh," says the Doberman, "I went for the postman. He said I ought to be put down, but my owner pleaded with him until he said that if she got me castrated instead then he wouldn't take it any further. So that's what I'm in for. How about you?"

"Oh," says the German Shepherd, "my owner was cleaning the kitchen floor in her bathrobe, and while she was reaching for something under the fridge, her bathrobe fell off, and she looked and smelled so good that I mounted her then and there."

"Oh," says the Doberman, "so you're in to be castrated as well?"

"No," says the German Shepherd, "just to get my claws clipped."