Three dogs, a Doberman, a Boxer, and a Labrador are sitting in the waiting room at the vet's office when they strike up a conversation.
The Doberman turns to the Boxer and says, "So why are you here?"
The Boxer replies, "I'm a pisser. I piss on everything - the sofa, the cat, the kid. But the final straw was last night, when I pissed in the middle of my owner's bed."
The Doberman says, "So what is the vet going to do?"
"Lethal injection" came the reply from the sad Boxer.
The Doberman then turns to the Labrador and asks, "Why are you here?"
The Lab says, "I'm a digger. I dig under fences, dig up flowers and trees. I dig just for the hell of it. When I'm inside, I dig up the carpets. But I went over the line last night when I dug a great big hole in my owner's couch."
"So what are they going to do to you?" the Doberman inquired.
"Lethal injection," the dejected Labrador said. The Labrador then turns to the Doberman and asks what he's at the vet's office for.
"I'm a humper," the Doberman says. "I'll hump anything. I'll hump the cat, a pillow, the table, fire hydrants, whatever. I want to hump - everything I see. Yesterday, my owner had just gotten out of the shower and was bending down to dry her toes, and I just couldn't help myself. I hopped on her back and started humping away."
The Boxer and Labrador exchange a sad glance and say, "So, lethal injection for you too, huh?"
"No, no," the Doberman says, "I'm here to get my nails clipped."