Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Sharks, like other fish, have their reproductive organs in their chests.
248
Cats recognise the voice of their owner, but never evolved to care.
22
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The octopus does not have a blind spot.
273