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Browse three reviewed snakes at a time. Changing pages does not reload or move you away from the myths below.
Sonora occipitalis
No medically significant venom known
Sonora occipitalis (Mohave shovel-nosed snake) is a small, burrowing colubrid native to arid regions of the southwestern United States and northern Mexico. It is non-aggressive, primarily nocturnal or crepuscular, and feeds on small lizards, amphibians, and insect prey. Not considered to have medically significant venom for humans, but should not be handled.
Salvadora grahamiae
No medically significant venom known
Salvadora grahamiae (Mountain Patch-nosed Snake) is a slender, fast-moving colubrid found in arid to semi-arid highland habitats in the southwestern U.S., Mexico, and southern British Columbia. Diurnal and primarily active on the surface, it forages for lizards, small snakes, and occasional amphibians and insects. Not considered dangerously venomous to humans, it relies on speed and escape; bites are uncommon and typically produce minor localized effects. Homeowners encountering this species should observe from a distance, discourage its presence around buildings by removing shelter and food sources, and contact local wildlife authorities if assistance is needed.
Thamnophis rufipunctatus
No medically significant venom known
Thamnophis rufipunctatus — Narrow-headed Gartersnake — is a small, semi-aquatic natricine snake native to parts of the southwestern United States and adjacent Mexico. It is associated with springs, streams, and marshy riparian areas and feeds primarily on aquatic prey. Generally not dangerous to humans; no medically significant venom is known. Homeowners should avoid handling, secure water sources to reduce unwanted encounters, and protect small pets and poultry near water.
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.