Sharks, like other fish, have their reproductive organs in their chests.
248
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
Dogs sometimes fake being sick to get attention.
26
Cats and dogs can hear ultrasound.
350
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
Female kangaroos have three vaginas.
2
Worker bees must visit around 4,000 flowers in order to make one tablespoon of honey.
5