Central Ratsnake (often called Gray Ratsnake or Black Ratsnake)
Pantherophis alleghaniensis (formerly Pantherophis spiloides) • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Pantherophis, Species: P. alleghaniensis
Eastern North America, specifically from the Mississippi River east to the Atlantic coast and north into southern Canada. This specimen is native to Northwest Alabama.
Look up Central Ratsnake (often called Gray Ratsnake or Black Ratsnake) in the Snake Encyclopedia →Venomous Status
Non-venomous (aglyphous - lacks specialized fangs)
Danger Level
Harmless / Low Risk. They are not dangerous to humans or pets and typically attempt to flee or play dead. While they may strike if cornered, they have no venom.
Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Pantherophis, Species: P. alleghaniensis
Conservation
Least Concern (IUCN). Their greatest threats are habitat fragmentation and intentional killing due to being mistaken for venomous species.
Physical Description
Large, stout body with weakly keeled scales. Adults in Alabama typically have a dark grey to black base color with faint, darker blotches. The underbelly is usually white or cream with a checkered pattern. Head is wider than the neck, and pupils are round.
Size & Dimensions
The specimen appears to be an adult, approximately 3.5 to 4.5 feet long. The species typically ranges from 3 to 6 feet, with a record length of over 8 feet.
Habitat
Generalist species found in forests, agricultural fields, rocky outcrops, and urban areas. Frequently found in or around suburban structures like barns and attics due to being excellent climbers.
Behavior & Temperament
Known for a 'kinked' defensive posture where they hold their body in a series of waves to break up their silhouette. They are diurnal or nocturnal depending on temperature. Generally docile but will hiss and strike if threatened.
Diet & Feeding
Active foragers and powerful constrictors. They primary consume rodents, birds, and eggs. They are highly valued by farmers for controlling pest populations.
Reproduction
Oviparous (egg-laying). Females lay between 7 and 30 eggs in mid-summer, usually in rotting logs or leaf litter. Hatchlings emerge in late summer/early fall with much brighter, high-contrast patterns.
Venom Profile
Non-venomous - no medically significant venom.
Look-alikes
Often confused with the venomous Cottonmouth (Agkistrodon piscivorus) or Timber Rattlesnake (Crotalus horridus). Unlike Cottonmouths, ratsnakes have round pupils and lack heat-sensing pits. Unlike rattlesnakes, they lack a rattle and have a more slender build.
Conservation Status
Least Concern (IUCN). Their greatest threats are habitat fragmentation and intentional killing due to being mistaken for venomous species.
Cultural Significance
Commonly known as 'Barn Snakes' or 'Chicken Snakes,' they are ecologically vital for rodent control. In North American folklore, they are often respected as beneficial 'good' snakes for landowners.
Notable Features
Remarkable climbing ability; they are capable of scaling vertical tree trunks or brick walls by using their keeled belly scales to grip imperfections in the surface.
Notes
North west ALABAMA