Sharks have been on the planet longer than trees.
14
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10
Drivers kill more deer than hunters do.
660
The seahorse is the only fish to have a neck.
12