Syfy

Named for its distinctive cry, the Ahool just may be the world's biggest bat. Ahools reportedly make their home in the dense rainforests of Java. They've got a 12-foot wingspan, hairy and gray fur, a flattened face with huge black eyes and a simian skull.

Unlike so many of its rumored cryptid relatives, the Ahool has no supernatural abilities or deadly feeding habits. In fact, locals say it lives on a diet of fish.