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
Cats and dogs can hear ultrasound.
350
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
When dragonflies mate, their tails form a love heart.
22
In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
46
The Basenji dog is the only dog that is not able to bark.
4
The station master and operating officer at the Kishi Station, Japan, is a cat!
18