Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Sharks, like other fish, have their reproductive organs in their chests.
248
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
205