So a man takes his Rottweiler to the veterinarian and says, “My dog is going cross-eyed. Is there anything you can do to help him?”

“Well,” replies the vet, “let’s have a look at him.” So he picks up the dog and checks its eyes.

After a quick exam, the vet turns to the owner and says, “I’m afraid I’m going to have to put him down.”

“Why? Just because he’s cross-eyed?”

“No,” says the vet. “It’s just that he’s really heavy.”