There are approximately three chickens for every human on Earth.
13
Lurch, a Watusi bull, had the largest horns in the world.
32
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
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
Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
34
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Sloths take two weeks to digest their food.
243
Cats and dogs can hear ultrasound.
350