Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The Basenji dog is the only dog that is not able to bark.
4
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Cats recognise the voice of their owner, but never evolved to care.
22
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10