The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
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
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Bats sleep 18-20 hours per day.
5
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Jellyfish as a species are actually older than dinosaurs and sharks.
383
