A polar bear's skin is black. Its fur is not white, but actually clear.
25
The original name for the butterfly was 'flutterby'!
121
A cow gives nearly 200,000 glasses of milk in her lifetime.
33
The world's smallest mammal is the bumblebee bat of Thailand, weighing less than a penny.
60
A hummingbird weighs less than a penny.
1k
Greyhounds have the best eyesight of any breed of dog.
28
Bluebirds cannot see the color blue.
40
Cows can sleep standing up, but they can only dream lying down.
745