When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
The Basenji dog is the only dog that is not able to bark.
4
When dragonflies mate, their tails form a love heart.
22
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Cats sleep for 70% of their lives.
8