i doubt it's a chupacabras. they're supposed to have long back legs and short front arms and they're able to walk upright. big red eyes, and spikes coming out of its back. when you spread its wings they're supposed to reveal skin folds that look similar to wings.
http://1.bp.blogspot.com/_3BTBv9_z78...upacabras1.jpg
http://www.channel4.com/culture/micr...chupacabra.jpg