It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Mosquitoes don't just bite you, they also pee on you.
11
Bats sleep 18-20 hours per day.
5
Gorillas can catch human colds and other illnesses.
205
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
When dragonflies mate, their tails form a love heart.
22