Black Rat Snake
Pantherophis obsoletus • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Pantherophis, Species: P. obsoletus
Native to eastern and central North America, ranging from southern New York and Vermont westward to the Great Plains, and southward to northern Florida and Texas.
Look up Black Rat Snake in the Snake Encyclopedia →Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Pantherophis, Species: P. obsoletus
Conservation
Evaluated as Least Concern by the IUCN Red List, though local populations face threats from habitat fragmentation, road mortality, and intentional killing.
Physical Description
Glossy black dorsal coloration with hints of white or yellowish interstitial skin between scales, a distinct whitish chin and throat area, weakly keeled scales giving a shiny appearance, and a robust, somewhat loaf-shaped body cross-section.
Size & Dimensions
The pictured specimen appears to be an adult around 1.5 to 1.8 meters in length. Typical adult size ranges from 1.0 to 2.5 meters, with maximum recorded lengths exceeding 2.5 meters.
Habitat
Inhabits a wide variety of habitats including deciduous forests, rocky wooded hillsides, agricultural fields, abandoned barns, and suburban areas, frequently utilizing elevated microhabitats such as trees, rafters, and ledges.
Diet & Feeding
Preys primarily on rodents, birds, bird eggs, and bats. It is an active forager and proficient climber that uses constriction to subdue its prey.
Reproduction
Oviparous species that typically mates in late spring and deposits clutches ranging from 6 to 30 eggs in rotting logs, underground burrows, or loose soil during mid-summer.
Look-alikes
Frequently confused with the Eastern Racer (Coluber constrictor) and Eastern Mud Snake (Farancia abacura), but distinguished by its weakly keeled scales, loaf-shaped body, and white chin pattern.
Conservation Status
Evaluated as Least Concern by the IUCN Red List, though local populations face threats from habitat fragmentation, road mortality, and intentional killing.
Cultural Significance
Highly regarded by farmers for its effectiveness in controlling rodent populations around barns and agricultural structures, earning it a positive reputation in rural pest management.
Notable Features
Possesses exceptional climbing abilities, often found suspended or navigating vertical wooden structures and rafters using specialized belly scales and muscular control.