Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
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
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16
When cats are happy, they may squeeze their eyes shut.
10