A newborn Chinese water deer is so small, it can (almost) be held in the palm of a hand.
13
A scorpion can hold its breath for up to 6 days.
19
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
The reindeer is the only mammal that can see UV light.
17
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Whales and dolphins can't taste anything other than salt.
11