Chupacabra

The Chupacabra was a member of an eponymous race of genetically engineered creatures from the planet Faqui that were accidentally introduced to Earth's biosphere in 1995.

Where as most other Chupacabras possessed animal-like minds, one was known to possess Human-like intelligence - even learning to speak Spanish and English. Their diet mostly consisted of mammalian or avian blood - most notably from goats, hence their name.