Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Sharks have been on the planet longer than trees.
14
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492