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
Whales and dolphins can't taste anything other than salt.
11
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
Jumping fleas can accelerate 50 times faster than the space shuttle.
218