Female canaries cannot sing.
14
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The cat brain weighs about 30g.
167
The pea aphid insect explodes itself thereby sacrificing its life to protect its relatives from predators.
3
A giraffe can clean its ears with its 21-inch tongue!
31
Cats make over 100 different vocal sounds; dogs can make about ten.
26
A tuna fish can swim 100 miles in a single day!
29
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264