One more reason not to live in a haunted house...

Dust and lint art by Suzanne Proulx
Just a few of the roughly 175 American terms, new and old, for those balls of dust and lint you find under the furniture:  Dust bunnies, dust dollies, dust tigers, dust puppies, dust kitties, bunny tails, moots, woolies, woozies, beggar's velvet, house moss, reebolees, gollywogs, cussywops, woofinpoofs, “somebody either comin’ or goin,’" curds, fooskies, frog hair, slut's wool, and ghost manure.