Rabies, swine flu and avian flu are diseases transmitted from animals to humans, often with fatal consequences. But sometimes the transmission goes the other way. Animals in zoos — especially primates — have died from influenza and other viruses they picked up from humans. There's even some evidence that humans with H1N1 "swine flu" passed that virus back to healthy pig population and made them sick, too.

What type of animal is Ranger Rick, the National Wildlife Federation mascot?

A) Bear

B) Dog

C) Raccoon

D) Skunk

Previous answer: Cary Elwes, John Cleese, Sean Connery and Russell Crowe all have played Robin Hood on screen.

TRIVIA FANS: Leslie Elman is the author of "Weird But True: 200 Astounding, Outrageous and Totally Off the Wall Facts." Contact her at [email protected].