Sharks have been on the planet longer than trees.
14
The elephant brain weighs about 6,000g.
274
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
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
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212