Central Ratsnake (specifically the 'Black Ratsnake' phenotype)
Pantherophis alleghaniensis • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Pantherophis, Species: P. alleghaniensis
Eastern North America, ranging from the East Coast of the United States to the Mississippi River, and from the Gulf Coast north into southern Canada.
Look up Central Ratsnake (specifically the 'Black Ratsnake' phenotype) in the Snake Encyclopedia →Venomous Status
Non-venomous
Danger Level
Harmless - poses no risk to humans, though they may bite or musk if handled roughly or cornered.
Family
Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Colubrinae, Genus: Pantherophis, Species: P. alleghaniensis
Conservation
IUCN Red List: Least Concern. Generally common, though populations in the northernmost parts of their range (e.g., Canada) face habitat fragmentation threats.
Physical Description
This specimen shows the 'black' phenotype common in northern ranges. It has a glossy black base color with faint remnants of a juvenile blotched pattern visible between scales. The head is relatively distinct from the neck with large eyes and round pupils. Scales are weakly keeled and the belly is typically light with a checkerboard pattern.
Size & Dimensions
The specimen in the image appears to be a juvenile/sub-adult approx 2-3 feet (60-90 cm) long. Adults typically range from 3.5 to 6 feet, with record lengths exceeding 8 feet.
Habitat
Extremely versatile; found in hardwood forests, swampy bottomlands, farmland, and rocky hillsides. They are semi-arboreal and frequently enter human structures such as barns, attics, and trash receptacles.
Behavior & Temperament
Known for being excellent climbers and active foragers. When threatened, they often 'kink' their bodies to break up their silhouette or vibrate their tails in dry leaf litter to mimic rattlesnakes. Mostly diurnal, though may become crepuscular/nocturnal in extreme summer heat.
Diet & Feeding
Diet consists primarily of rodents, birds, and eggs. They use powerful constriction to dispatch prey and are active foragers that frequently climb trees to find nests.
Reproduction
Oviparous (egg-laying). Females lay clutches of 10-30 eggs in mid-summer, typically in rotting logs or leaf mulch, which hatch in late summer or early fall.
Venom Profile
Non-venomous - no medically significant venom.
Look-alikes
North American Racer (Coluber constrictor), which has smooth scales and is more uniform matte black; Gray Ratsnake (Pantherophis spiloides), which retains a heavier blotched pattern; and various Kingsnakes.
Conservation Status
IUCN Red List: Least Concern. Generally common, though populations in the northernmost parts of their range (e.g., Canada) face habitat fragmentation threats.
Cultural Significance
Highly valued by farmers for pest control as they consume large numbers of agricultural rodents. Historically referred to as 'Pilot Black Snakes' due to the false myth that they led rattlesnakes to denning sites.
Notable Features
Often found in 'impossible' places due to their exceptional climbing ability; they have a uniquely 'loaf-of-bread' shaped body cross-section that helps them grip vertical surfaces.