Second opinion

Snakes are recommended in five counties as intermediate agents or recipients of the very affliction they cause – snakebites – evidently on the theory that they are immune to their own poison. “To treat a snakebite,” a Shelby cure says, “kill the snake by cutting off his head. Place the body of the snake against the wound to draw out the poison.” A symbolic ritual is outlined in a Dallas example: “Catch the snake and cut him into small pieces. Build a fire and burn each piece one by one for a sure cure.” An even stranger remedy from Harris says to “cut up the snake and eat the meat raw.”

from “Magical Transference of Disease in Texas Folk Medicine” by John Q. Anderson

If you or someone you are with is bitten by a snake you should not try to catch or kill the snake.

from "Snake bites - Treatment" on the NHS website