Alligator snapping turtles can live for over 150 years. Scientists know this because some of the turtles had musket balls in their stomachs.
271
Female kangaroos have three vaginas.
2
When cats are happy, they may squeeze their eyes shut.
10
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6