Jellyfish as a species are actually older than dinosaurs and sharks.
383
Sharks have been on the planet longer than trees.
14
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Lobsters have blue blood.
476
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20