It took evolution millions of years to come up with snake venom proteins that shut down mammal organs. The same goes for microbes that produce toxins like anthrax and botulinum.

Said a farmer in the cold of winter to see a snake frozen, that it is very poor, so it picked up, the carefully goes to arms, warm with the warmth of its body.

To kill a snake, goes an old African proverb, you must first crush the head.