An ordinary dog who has been boiled down by the devil until it is a tiny, fur covered skeleton filled with nothing but hatred and evil who bites away at anything pure and who squirts their shit (deeply unpleasant diarrhoea-like slimy sludge) and piss. They are also the epitome of stupidity and their barks are like screeches from the deepest pits of hell. You also can't tell a rabid chihuahua from a healthy one as the evil bastards are always growling and frothing and screeching
Person 1: Hey dude I just got a chihuahua, and he's the cutest lil guy ever!!!
Person 2: Your nose... it's missing...
Person 1: Oh yeah, my beautifullil puppy got a bit hungry
Its not even a dog. Chihuahuas are theses ugly rodent like animals originating from a third world country somewhere near hell. They are the ugly little satan spawns who enjoy humping things and annoying people.