The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
Dolphins have names for one another.
18
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Condoms were originally made of animal intestines or linen.
347
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45