A man brings his Rottweiler into the vet. “My dog is cross-eyed is there anything you can do for him?”

“Well,” the vet says, “Let’s have a look at him.” The vet picks up the dog and looks into his eyes. After a few second the he says, “I’m afraid I’m going to have to put him down.”

The shocked owner replies, “what?! Because he’s cross-eyed?!”

“No, because he’s heavy.”