When cats are happy, they may squeeze their eyes shut.
10
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6