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
Cats sleep for 70% of their lives.
8
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The colossal squid has the largest eyes in the world.
4
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
205