Only 3% of bird species have penises.
0
Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Female kangaroos have three vaginas.
2
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
The most expensive cow in the world was sold in 2009 for $1.2 million.
-3
Two dogs were among the Titanic survivors.
262