When cats are happy, they may squeeze their eyes shut.
10
A 42-foot sperm whale has about 7 tons of oil in it.
209
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
Drivers kill more deer than hunters do.
660
The Basenji dog is the only dog that is not able to bark.
4