Cows can sleep standing up, but they can only dream lying down.
745
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
205
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The reindeer is the only mammal that can see UV light.
17
The elephant brain weighs about 6,000g.
274
George was the world's largest dog who weighed 233 pounds, stood at 43 inches tall from paw to shoulder, and ate 180 pounds of food a month.
7