In a blow to supernatural wildlife loremasters everywhere, it turns out that Chupacabras are probably just coyotes with a severe case of mange. If you haven't heard of Chupacabras before you're not alone, they are a mysterious creature that started showing up in Central America in the mid-90's and recently there have been reported sightings in Southwestern U.S.
In an interview on NPR , Dr. Barry O'Connor talks about why he thinks the mysterious "goat suckers" are probably just mangy coyotes.
Well, I'm kind of an expert on the big group of mites that causes mange, and what we see in the photographs that are purportedly chupacabras are clearly mange-infested coyotes or dogs. These are animals that have a pretty severe case of these parasitic mites that typically causes them to die ultimately, but they do get really ugly before that happens.
National geographic also has an article posted about the Chupacabras that is worth a look .