Cows. Seriously. They are terrifying.
The world's largest spider, the South American Bird Eater, is about as big as a dinner plate.
The Chianina is the largest cow breed. A full grown bull can grow over 6 feet, and are about 3,500 lbs of muscle.
You can step on a spider and squish it with your shoes. If you stepped on this thing, it would spear you through the chest and fling you in the air.