Domestic pigs average a top speed of about 11 miles per hour.
182
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
When cats are happy, they may squeeze their eyes shut.
10
Sharks, like other fish, have their reproductive organs in their chests.
248
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5
Female kangaroos have three vaginas.
2