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
Sharks, like other fish, have their reproductive organs in their chests.
248
There's a lizard known as the 'Jesus Lizard' that can run across water.
11
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
The colossal squid has the largest eyes in the world.
4