This creature is neither fully rat nor bat and was produced in an insane US military experiment in the 60s. It hibernates most of the time, and is very rarely seen. Was given the name Rattigan McBat because of its tendency to crawl through tunnels and hang upside-down.
"Holy crap. That's Rattigan McBat! Elephant man eat your heart out!"
by Taximan February 24, 2005