Eastern Ratsnake
Pantherophis alleghaniensis • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Pantherophis, Species: Pantherophis alleghaniensis
Eastern and central North America, ranging from New York south to Florida and west to Louisiana and parts of the Mississippi River basin.
Look up Eastern Ratsnake in the Snake Encyclopedia →Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Pantherophis, Species: Pantherophis alleghaniensis
Conservation
Listed as Least Concern on the IUCN Red List due to its wide distribution and high adaptability to disturbed habitats, though localized populations face threats from vehicular mortality and habitat loss.
Physical Description
Features a slender body with a patterned dorsum of dark blotches over a brownish or grayish background, though coloration can vary widely. The head is slightly distinct from the neck, and scales are weakly keeled. Dark stripes may be present on the head and neck region.
Size & Dimensions
Specimens typically range from 90 to 180 cm (36 to 72 inches) in total length, with maximum recorded lengths exceeding 200 cm. This specimen appears to be an adult.
Habitat
Found in a wide variety of habitats including deciduous forests, pine barrens, agricultural fields, rocky hillsides, and suburban woodlots. Highly adaptable and frequently climbs trees or utilizes abandoned structures and hollow logs.
Diet & Feeding
Diet consists primarily of rodents, birds, bird eggs, and small mammals. They are active foragers and proficient climbers, often subduing prey through constriction before ingestion.
Reproduction
Oviparous species that typically mates in late spring. Females lay clutches ranging from 10 to 30 eggs in rotting logs, leaf litter, or underground burrows during the summer months, with incubation lasting approximately two months.
Look-alikes
Frequently confused with other rat snakes within the Pantherophis genus, such as the Central Ratsnake (Pantherophis spiloides) and Fox Snakes (Pantherophis vulpinus), as well as certain species of racers (Coluber) which possess smooth scales rather than keeled scales.
Conservation Status
Listed as Least Concern on the IUCN Red List due to its wide distribution and high adaptability to disturbed habitats, though localized populations face threats from vehicular mortality and habitat loss.
Cultural Significance
Valued ecologically as a natural controller of rodent populations in agricultural and suburban landscapes. Frequently encountered around rural properties and barns.
Notable Features
Renowned for exceptional climbing abilities, allowing them to scale vertical tree bark and brick walls with ease. May freeze when approached or kink their bodies into an accordion-like pattern when threatened.