The reindeer is the only mammal that can see UV light.
17
Lurch, a Watusi bull, had the largest horns in the world.
32
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
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
Sharks have been on the planet longer than trees.
14
Cats sleep for 70% of their lives.
8