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http://thelifeofericmedina.blogspot.com/2008/10/chupacabra.html
Cupacabra

            The cupacabra is a cryptid native to Mexico. The chupacabra means goatsucker and it does exactly that.  The first sighting was in Puerto Rico in March 1995.

The creature has two descriptions. One is a hairless dog like creature that sucks out all the blood out of goats through three punctured holes. The other is like a reptile man.

People believe in it because all the sightings and I enjoy thinking that unknown creature may exist. I think people should use a video camera and film fenced in live stock such as goats and see if you find it. I do believe in it because the proof is logical.