This one's a bit off color-         

A woman took her Great Dane to the vet and unexpectedly ran into one of her friends in the waiting room.
"Hi, what are you doing here?" she asked.
"I'm having my Poodle fixed because he's so randy that every time I bend over he tries to mount me."
"Oh, mine's always trying to mount me as well."
"So, are you also having him fixed?"
"No, I'm having his nails clipped."