One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
A group of pugs is called a grumble.
10
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Cats and dogs can hear ultrasound.
350
Squirrels forget where they hide about half of their nuts.
698