Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
There are approximately three chickens for every human on Earth.
13
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255