The cat brain weighs about 30g.
167
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
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 sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
The largest breed of rabbit is the Flemish Giant.
65
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328