Y or V shaped patch on the neck. There are 25 different subspecies known throughout the snake's geographical range, all with slight coloration variations. The neck has a light collar with colored, black bordered bands separated by light rings. There are no reported color differences between male and female. Adults feed mainly on rodents such as voles, mice, and rats, but will also eat birds, bird eggs, lizards, snake eggs, or other snakes, including venomous species.
Hatchlings seem to feed mainly on other young snakes.
When prey is captured, it is contricted until it suffocates. Although the specific mating strategy could not be found, it is known that Milk Snakes mate in the spring, probably while still in group hibernation. The young are always brightly colored, though color dulls as maturity is reached. It takes 3 - 4 years to reach full maturity. Behavior A solitary species, L. triangulum is rarely seen in the open during the day, but is often seen crossing roads at night.