Desert Kingsnake

Fascinating facts about the Desert Kingsnake

• A desert kingsnake can grow up to 6.8 ft, though most adults are 3–4 ft long, showing a size range for a non-venomous snake. This flexibility lets them tackle prey from tiny mice up to rattlesnakes, indicating size alone doesn’t dictate a predator’s role.
• When threatened, the snake often flips onto its back and plays dead, a behavior that can fool predators and serve as a life-saving tactic in the wild.
• Its smooth dorsal scales run in 23 to 25 rows at midbody, forming a glossy black-and-yellow pattern that blends into desert shadows and sun-dappled rocks. Such precise scale counts help herpetologists tell this species apart from its close relatives.
• Courtship runs from March to June, and the female deposits 5 to 12 eggs deep enough to stay moist for about 60 days before hatching 8- to 10-inch hatchlings. The tiny newborns, weighing a fifth of an ounce, already sport the bright yellow speckles that will later fade, showing how early coloration prepares them for camouflage.
• Because it can tolerate pitviper venom, the desert kingsnake will eat young diamondback rattlesnakes, and adult western diamondbacks may recoil when it appears.

At a glance

About the Desert Kingsnake

The desert kingsnake (Lampropeltis splendida) glides through the arid expanses of Texas, Arizona, and New Mexico with a glossy dorsum of black or very dark brown speckled with off-white or yellow flecks. These pale speckles form dim, narrow vertebral cross-bands, while the intervening rectangular areas remain stark black. Along the lower sides, pale yellow scales may dominate, and the belly is a canvas of black punctuated by white or pale yellow blotches at the outer edges of the ventral plates. Smooth dorsal scales are arranged in 23 to 25 rows at mid-body, and the anal plate remains undivided, giving the snake a sleek, streamlined appearance that belies its potential length of up to 6.8 ft, though most individuals measure 3–4 ft. In the wild, this colubrid favors mesic microhabitats, riparian corridors, water tanks, and other rural sites where moisture lingers, despite its desert-type moniker. It is a powerful constrictor, preying on rodents, lizards, and even other snakes, including young western diamondback rattlesnakes, thanks to a remarkable resistance to pitviper venom. When threatened by humans, it may play dead, flipping onto its back and remaining motionless, a behavior that adds to its reputation as a docile, if enigmatic, inhabitant of the Southwest.

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