Bats in Peru attack unsuspecting penguin chicks living in dark caves. ->
After 20 minutes the shopper's hand swelled to the size of a grapefruit.
Snakes have a viscous way of using their venom.
Are pit bulls as dangerous as Maryland thinks they are? How long should women breast-feed? Did the Mayans actually predict doomsday? Find out the answers in This Week in Discovery News.