Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
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
The seahorse is the only fish to have a neck.
12
Lobsters have blue blood.
476