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
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Only 3% of bird species have penises.
0
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
The largest earthworm on record was found in South Africa and measured 22 feet.
151