The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Penguins have a gland above their eye that turns saltwater into freshwater.
12
Sharks have been on the planet longer than trees.
14
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
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