Razorbats are leather-winged Atlantean monstrosities that measure only about six-inches from wingtip to wingtip that feed exclusively on blood. They live in dark places such as caves, and are known to hibernate for years until disturbed or awakened by the smell of blood. Their razor sharp beak-like proboscis protruding from a hairy alien head that includes four compound eyes can slice a man and drink up to a liter of blood each. Their razor beaks are coated with a unique paralytic saliva which can render a deer or cow immobile in under a minute as the swarm of these beasts land and begin to feed.