Sharks have been on the planet longer than trees.
14
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Dolphins have names for one another.
18
A 42-foot sperm whale has about 7 tons of oil in it.
209
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12