A Talent Scout
The man brings his little dog to the talent scout's office. The little dog is just about to finish singing "La Donna E' Mobile," when a large dog runs into the room and grabs him by the scruff of the neck. She (it's a bitch) runs away with him in her mouth.
The talent scout yells, "Stop her. She's taking away our fortune"!
The man replies, sadly, "It's no use. That's his mother. She doesn't want him to be on stage. She wants him to be a doctor".