Sharks have been on the planet longer than trees.
14
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Alligators can live up to 100 years.
337
Penguins have a gland above their eye that turns saltwater into freshwater.
12
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
The elephant brain weighs about 6,000g.
274