Another monster is mentioned, named Leviathan, who dwells in the sea. Two readers sent in these interesting theories. Well one school of thought believe that the Chupacabra is a genetic experiment gone wrong. We all know that the government has technology long before the populous does, so it would make sense that they have the technology to clone. Another reader sent in this other theory.
Witnesses describe it as having a membrane under it's arms which they believe it uses to fly.
My belief is that it uses these membranes to swim. This taking into consideration that most of the sightings take place near a river. An interview on the web says that a large unnamed university in Texas is currently studying a dead Chupacabra that was captured in a trap near San Antonio. Read the interview by clicking this link .