Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Cows can sleep standing up, but they can only dream lying down.
745
Dogs have been man's pet for over 14,000 years.
224
Sharks, like other fish, have their reproductive organs in their chests.
248
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10