It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Bats sleep 18-20 hours per day.
5
Rex the German Shepherd was a rescue dog with a bad temper. He refused to be fed by humans and would attack strangers, but he’s a changed dog after falling in love with Geraldine the goose!
10
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20