Missouri records
Pygmy Rattlesnake in Missouri
VenomousSistrurus miliarius

Yes. The Pygmy Rattlesnake has been recorded in 14 Missouri counties. It is venomous. Stout, dark-blotched body, nine large scales on the crown, and a small rattle.
If you are bitten
Rattlesnake bites are medically serious. Expect intense pain, rapid swelling, and bruising. Stay calm, keep the bitten limb still and roughly level with the heart, remove rings and tight clothing, and get to an emergency room immediately. Do NOT apply a tourniquet, cut the wound, apply ice, or try to suck out venom. Call Poison Control at 1-800-222-1222 or 911 in the US, or your local emergency number. (Source: CDC.)
Missouri counties with Pygmy Rattlesnake records
14 listedSee the full Pygmy Rattlesnake profile or all snakes in Missouri.