Only 3% of bird species have penises.
0
Cats and dogs can hear ultrasound.
350
Sharks have been on the planet longer than trees.
14
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
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
The station master and operating officer at the Kishi Station, Japan, is a cat!
18