Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Alligators can live up to 100 years.
337
The Basenji dog is the only dog that is not able to bark.
4
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
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
The cat brain weighs about 30g.
167