When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Squirrels forget where they hide about half of their nuts.
698
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
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
A group of pugs is called a grumble.
10