Snake myths, practical clues, and safer decisions.

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Published snake guide

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177 published

Mexican Garter Snake

Thamnophis eques

No medically significant venom known

Thamnophis eques (Mexican garter snake) is a semi-aquatic natricine snake found in western and central Mexico and disjunct populations in the southwestern United States. Typically associated with wetlands, streams, and irrigation channels, it feeds mainly on amphibians, fish, and aquatic invertebrates. Not considered dangerously venomous to humans; bites may cause mild local effects in rare cases. Avoid handling; secure waterfowl/poultry access to water margins to reduce attractants.

Mexican Hog-nosed Snake

Heterodon kennerlyi

No medically significant venom known

Heterodon kennerlyi, commonly called the Mexican hog-nosed snake, is a small, stout colubrid native to parts of Mexico and adjacent areas of the southwestern United States. It is a terrestrial species known for upturned snout and defensive displays. It is not considered dangerously venomous to humans, but should be treated with caution and not handled.

Mexican Milk Snake

Lampropeltis annulata

No medically significant venom known

Lampropeltis annulata, commonly called the Mexican milk snake, is a nonvenomous colubrid native to northeastern Mexico and adjacent Texas. It is secretive, primarily nocturnal or crepuscular in hot weather, and occupies semi-arid scrub, grasslands, rocky hillsides, and agricultural edges. It feeds mainly on rodents, lizards, and other snakes. While not dangerous to humans, it should not be handled; it may bite or release musk when stressed. Reproduction is oviparous with clutches laid in summer.