Chihuahua

A man walks into a bar one day and asks, "Does anyone here own that rottweiler outside? "
"Yeah, I do! " a biker says, standing up. "What about it? "
"Well, I think my chihuahua just killed him..."
"What are you talkin' about?! " the biker says, disbelievingly. "How could your little runt kill my rottweiler? "
"Well, it seems he got stuck in your dog's throat!"