Denmark has twice as many pigs as there are people.
66
A 42-foot sperm whale has about 7 tons of oil in it.
209
Sharks have been on the planet longer than trees.
14
Cats and dogs can hear ultrasound.
350
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212