Sharks have been on the planet longer than trees.
14
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
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
Moths are unable to fly during an earthquake.
328