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
The station master and operating officer at the Kishi Station, Japan, is a cat!
18
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Denmark has twice as many pigs as there are people.
66
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The largest earthworm on record was found in South Africa and measured 22 feet.
151