A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Mosquitoes don't just bite you, they also pee on you.
11
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Queen ants have one of the longest life-spans of any known insect - typically up to 30 years. Western harvester ant queens can live up to 40 years!
2
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
Sharks, like other fish, have their reproductive organs in their chests.
248