Chupacabra - Goatsucker, The name comes from the animal's reported habit of attacking and drinking the blood of livestock, especially goats. Physical descriptions of the creature vary. Eyewitness sightings have been claimed as early as 1990 in Puerto Rico, and have since been reported as far north as Maine, and as far south as Chile. It is supposedly a heavy creature, the size of a small bear, with a row of spines reaching from the neck to the base of the tail.