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Browse three reviewed snakes at a time. Changing pages does not reload or move you away from the myths below.
Rena dulcis
No medically significant venom known
Rena dulcis is a small, fossorial colubrid native to the southern United States, Mexico, and parts of California; commonly called the Texas blind snake or Texas threadsnake. It is nonvenomous to humans and feeds primarily on ants and termites. It is secretive, often found under debris, rocks, or during rain when they surface. It poses no meaningful threat to people, pets, or livestock but should not be handled.
Micrurus tener
Venomous
Micrurus tener is a small to medium-sized New World coral snake native to parts of the southern United States, Mexico, and extreme southern Canada (historical/rare). It is a brightly banded elapid with potent neurotoxic venom; bites are medical emergencies. Typically secretive and fossorial or semi-fossorial, it is most active in warm months and at night. Avoid contact and give the animal space; do not attempt to handle.
Trimorphodon vilkinsonii
Potentially venomous
Trimorphodon vilkinsonii (Texas lyresnake) is a slender, nocturnal colubrid native to parts of the southwestern United States, northern Mexico, and extreme southern California. It is mildly rear-fanged and produces a small amount of venom used to subdue prey; bites to humans are uncommon and typically cause localized pain and swelling, but medical evaluation is recommended for any bite.
Juvenile venomous snakes can deliver medically significant bites, but the common claim that they are automatically more dangerous because they cannot control venom delivery is not supported as a general rule. Adult snakes usually have larger venom glands and can deliver a larger total amount.
Bottom line: Treat every suspected venomous snakebite as a medical emergency, regardless of the snake’s age.
Head shape alone is unreliable. Many nonvenomous snakes flatten or widen the head defensively, and viewing angle can change the apparent shape.
Bottom line: Do not approach a snake to inspect its head. Use multiple traits, location, and a safe-distance photograph.
Tourniquets can worsen tissue injury and are not recommended for typical United States snakebites. Emergency evaluation is more important.
Bottom line: Call 911 or Poison Control at 1-800-222-1222. Keep the person calm and do not cut, suck, ice, or tourniquet the bite.
Young copperheads can have a contrasting yellow or greenish tail tip used in caudal luring. It is soft and tapered, not a segmented rattle. The bright color usually fades with age.
Bottom line: Never move closer to inspect the tail. The feature is a clue, not permission to approach or handle the snake.
Several non-rattlesnake species vibrate their tails when threatened. Dry leaves can make the sound resemble a rattle.
Bottom line: A defensive tail vibration does not identify the species. Keep your distance.