text: Actually, chupacabra are an unusual prosimian primate, genetically modified for a phlebotomous lifestyle by American scientists in the early sixties.  \n\nThe chupacabra was originally intended to be released into Cuba as part of a ploy to demoralize the people and topple Castro.  As most elaborate CIA plots, this one failed as the chupacabra escaped during the final testing phase in the American southwest.\n\nEssentially, the chupacabra is a sifaka, but with four razor sharp incisors with which it can slice a small wound.  Its saliva is an anti-coagulant and keeps blood flowing long enough for the chupacabra to take a meal.  Then the chupacabra bounds away quickly, back to the trees to digest its meal.  Sometimes two or more chupacabra will attack one animal.  The more of them that attack, the more likely they will go beserk with bloodlust and start shredding their prey.\n\nThe reason they are seldom seen is their ability to remain completely motionless while they are digesting their meal.  Hanging high in a tree, they resemble largish, hairy coconuts, and often go unnoticed.  Even in areas where coconuts are rare, and unhairy, few people actually look up high in the trees for the critter, and even if they see the hairy ball, they rarely connect it to the cattle mutilations.\n\nEither that or they're completely made up.  That would also explain why they're so hard to find.