Eastern Milksnake
Lampropeltis triangulum • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Lampropeltis, Species: Lampropeltis triangulum
Southeastern Canada through the northeastern and central United States, extending south to Alabama and Georgia.
Look up Eastern Milksnake in the Snake Encyclopedia →Venomous Status
Non-venomous (Aglyphous)
Danger Level
Harmless; they may strike if cornered but lack venom and have very small teeth. Most bites cause minor scratches or no breakage of skin.
Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Lampropeltis, Species: Lampropeltis triangulum
Conservation
IUCN Status: Least Concern. Generally secure, though populations face threats from habitat loss and road mortality.
Physical Description
Slender body with smooth, glossy scales. Gray to tan background color with reddish-brown or chocolate-colored blotches bordered in black. Often features a distinctive 'V' or 'Y' shaped mark on the back of the head. Pupils are round.
Size & Dimensions
The specimen pictured appears to be an adult, approximately 24-30 inches long. Adults typically range from 24 to 36 inches, with a record length of about 52 inches.
Habitat
Generalist species found in meadows, rocky hillsides, woodlands, and agricultural areas. Often found near human structures like barns and woodpiles for shelter and prey.
Behavior & Temperament
Primarily nocturnal or crepuscular, spending days hidden under debris. Generally secretive and docile, though they may vibrate their tails against dry leaves to mimic a rattlesnake when threatened.
Diet & Feeding
Active foragers that utilize constriction. Diet primarily consists of small mammals (mice, voles), but also includes birds, eggs, and other snakes.
Reproduction
Oviparous (egg-laying). Females lay clutches of 2 to 17 eggs in early summer, which hatch in late summer or early autumn.
Venom Profile
Non-venomous - no medically significant venom.
Look-alikes
Commonly confused with the Copperhead (Agkistrodon contortrix), which has hourglass-shaped bands and vertical pupils, and the Corn Snake (Pantherophis guttatus), which has keeled scales and different facial markings.
Conservation Status
IUCN Status: Least Concern. Generally secure, though populations face threats from habitat loss and road mortality.
Cultural Significance
Falsely named 'milksnakes' due to the old folk myth that they would sneak into barns to suck milk from cows; in reality, they were simply hunting the rodents attracted to the grain in barns.
Notable Features
Highly adapted for subterranean life with a narrow head for burrowing; displays Batesian mimicry by imitating the sound of a rattlesnake via tail vibration.