There was a Dog Whisperer episode on this past weekend on Chihuahuas from Hell. One was actually named El Diablo

Definitely a good show if you see it airing again on National Geographic channel. Careful if you're squeamish at seeing BLOOD though!
My friend had a "Minpin" that was super aggressive, and sadly I think it had to be put down from biting too many people

These dogs tend to be spoiled rotten too often.
