Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Moths are unable to fly during an earthquake.
328
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
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
When you shave a guinea pig it looks like a little hippo.
19
Ants tend to survive in a microwave because they find the coolest spot and wait!
17
There are approximately three chickens for every human on Earth.
13