Cats and dogs can hear ultrasound.
350
Sharks have been on the planet longer than trees.
14
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Cows can sleep standing up, but they can only dream lying down.
745