Chupacabra

The Chupacabra is a supposed species, possibly alien, that attacks goats and cattle. The first appearance of these creatures was in 1995, in Puerto Rico. It was described as a biped being, about 1.35 feet tall, with spikes down its back, long, thin arms and legs, and an alienlike oblong head with red or black eyes.

Later, it was discovered that the Chupacabras were actually just coyotes, which attacked goats and cattle. Benjamin Radford also came to realize that the description of the creature was very similar to the human-alien hybrid in "Species," and further discovered that, a few weeks before the first appearance, the man who saw him for the first time had assisted "Species".

Even with all these discoveries that refute the existence of Chupacabra, there are still people who strongly believe in its existence.