Ok, enough with all the "he's an alien" or "Escaped expiriment". El chupacabra has to be some kind of un-evolved prehistoric animal because it has many of the animal like appearances and some human qualities. Either that or its some mutated animal.

wow that is sooo believable! He must be an unevolved prehistoric animal or mutant. That makes alot more sense than alien or gee... maybe he's a FAKE!

I'll just go tell all my dorky friends about that and we can make a website called www.thetruthaboutelchupacabra.com