The Barn Owls hearing is so highly developed that they can hunt for their prey in total darkness.

The world's smallest owl is the elf owl which weighs 1.5 ounces and is the size of a sparrow.

Owls swallow their prey hole because they have no teeth. After approximately 12 hours they cough up the feathers, bones, and fur in a shape of a football pellet.

Owls have no teeth.

Male owls weigh less and are smaller than female owls.