The reindeer is the only mammal that can see UV light.
17
The head of a jellyfish is called the "Bell."
6
Dolphins have names for one another.
18
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
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14