NACOGDOCHES, Texas - As it turns out, volatile chemicals from a top secret experiment aboard the space shuttle Columbia were probably not responsible for producing some kind of mutant killer deer-dog that is running around deep East Texas sucking the blood from goats. Anyone who logs onto the Internet and runs a Google Image search for "Coyote" and "mange" may see some animals that look surprisingly like the strange looking "Pollok Mystery Beast" killed Friday in Angelina County. But SFA forestry professor and deer expert Dr. James Kroll didn't need the World Wide Web to help him identify the creature...