The beast known as Chupacabra is a NASTY piece of work seen all over the place, chiefly Mexico and America, known for drinking the BLOOD of livestock and just generally being a NUISANCE. Descriptions vary but its BIG SHARP TEETH remain a consistent visual element, for biting things, of course.

The name Chupacabra translates to "goat sucker", after its affinity for MAIMING goats and drinking their blood. They are seen as a PEST to farmers because of their talent for eating livestock, and occasionally one will be shot and killed by a farmer, leaving a body that looks SLIGHTLY like a dog with mange.

...Not entirely sure where the image of ALIEN-ESQUE Chupacabras come from, but they sure are SCARY.