Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
It has been estimated that a bite from a grizzly bear can crush a bowling ball.
11