Sharks have been on the planet longer than trees.
14
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11
The seahorse is the only fish to have a neck.
12
Jellyfish as a species are actually older than dinosaurs and sharks.
383
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17