The lore continues, of mange ridden animals such as dogs and other known domestic, feral and wild animals with mange being called "chupacabra." This one was captured in Oklahoma: Bizarre Animal Captured in Oklahoma...Blue Dog? on the Phantoms and Monsters blog, with thanks also to Strange State.
As I've commented here, and on my recent Trickster's Realm column for Binnall of America: A Chupie Meme what's considered a chupacabra has morphed from a truly high strangeness creature (possibly alien, entity from other realms/dimensions, government experiment gone awry, etc.) to any poor animal that is known that has mange.