Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Cats sleep for 70% of their lives.
8
Mahatma Gandhi used to travel with his goat so that he could have fresh milk.
11
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Two dogs were among the Titanic survivors.
262
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
There's a lizard known as the 'Jesus Lizard' that can run across water.
11
Sloths take two weeks to digest their food.
243