A sailor arrives in port and seeks out the nearest local drinking establishment. It's a rough part of town, being near the commercial docks.
He enters to ask, "Who's giant pitbull is tied up outside?"
A big longshoreman stands up, "You got a problem with Killa? You best stay away from him. He's the toughest, meanest dog you'll ever want to meet."
The sailor says, "No, no problem, it's just that my dog killed him. I'm sorry about that."
"WHAT!" the muscle-bound longshoreman shouts in surprise. "That dog has beat and even killed dozen of viscous boatyard dogs. I raised him from a pup to be the toughest, meanest, SOB around. How... What sort of dog do you got?"
The sailor looks a little more sorry when he says, "Well, my dog's a chihuahua I picked up in Mexico."
The dock worker looks relieved, "Ha! You had me going. There's no way your dog killed my Killa."
The sailor assures the rugged dock worker, "I'm sorry, but your dog is dead and my Chi Chi killed him."
"How'd a tiny little Chihuahua manage that?"
"Oh, well..." The sailor said, "My dog kinda got stuck in his throat and he choked to death."
-Will