Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
When cats are happy, they may squeeze their eyes shut.
10
One in three dog owners say they have talked to their pets on the phone.
427
A dairy cow can produce more milk when listening to music.
446
Sharks have been on the planet longer than trees.
14
Drivers kill more deer than hunters do.
660