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, like other fish, have their reproductive organs in their chests.
248
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16