Sharks have been on the planet longer than trees.
14
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Female kangaroos have three vaginas.
2
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Two dogs were among the Titanic survivors.
262