A rattlesnakes rattle is a warning if you hear the rattle they usually won't immediately attack so what you need to do is look at the snake and slowly walk backwards to get away from it you cannot outrun it making any sudden movements will scare it and it will attack but for the most part they don't want to eat you and would like to be left alone but it's better to avoid this altogether a rattlesnake might not always let you leave and it might attack so always watch where you are going rattlesnake anti-venom is extremely rare and difficult to get