A group of unicorns is called a blessing.
304
When cats are happy, they may squeeze their eyes shut.
10
A domestic cat can sprint at about 31 miles per hour.
274
Some older/less efficient worker termites will develop 'backpacks' of toxic chemicals that explode when the termite is threatened. They are essentially used as suicide bombers when the colony is being attacked.
8
A scorpion can hold its breath for up to 6 days.
19
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
Sharks have been on the planet longer than trees.
14