The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
A giraffe's kick is so powerful that it can decapitate a lion.
216