Common Watersnake (Banded Water Snake subspecies variant)
Nerodia sipedon • Order: Squamata, Suborder: Serpentes, Family: Colubridae, Subfamily: Natricinae, Genus: Nerodia, Species: Nerodia sipedon
Venomous Status
Non-venomous (Aglyphous - no specialized fangs)
Danger Level
Low Risk. These snakes are non-venomous and harmless to humans, though they are known to be highly defensive and will bite repeatedly and musk if handled.
Geographic Range
North America: Eastern and central United States, and south-central Canada. Found from Ontario and Quebec to Florida and west to Colorado and Texas.
Conservation Status
Least Concern (IUCN). Generally abundant, though often killed by humans who mistake them for venomous Cottonmouths.
Physical Description
Heavy-bodied snake with highly keeled scales. Coloration is typically brown to reddish-brown with dark crossbands near the head and alternating dorsal and lateral blotches further down the body. The head is wider than the neck, and the eyes have round pupils.
Size & Dimensions
Specimen appears to be a juvenile approximately 10-14 inches long. Adults typically range from 24 to 42 inches, with a maximum record of about 55 inches.
Habitat
Lentic and lotic freshwater environments including lakes, ponds, marshes, reservoirs, rivers, and streams. Often found basking on logs, rocks, or overhanging branches near water.
Behavior & Temperament
Diurnal and crepuscular; active during the day but also at night in warm weather. Very defensive; when threatened, they flatten their heads to appear larger, release a foul-smelling musk, and bite vigorously.
Diet & Feeding
Generalist carnivore focusing on aquatic prey. Feeds on fish, frogs, tadpoles, and occasionally salamanders or small mammals. Uses active foraging and strikes to capture prey without constriction.
Reproduction
Viviparous (gives birth to live young). Breeding occurs in spring, with litters of 15-30 young typically born in late summer or early autumn.
Venom Profile
Venom Type
Non-venomous - no medically significant venom.
AI-generated — see a qualified source if acting on this. For any snakebite, call emergency services immediately.
Look-alikes
Commonly confused with the Northern Cottonmouth (Agkistrodon piscivorus). Distinct from Cottonmouths by their round pupils (vs. vertical slits), labial bars (dark vertical lines on lip scales), and lack of a heat-sensing pit.
Conservation Status
Least Concern (IUCN). Generally abundant, though often killed by humans who mistake them for venomous Cottonmouths.
Cultural Significance
Often serves as a 'scapegoat' for venomous snakes, suffering high mortality from human persecution. Ecologically vital for controlling fish and amphibian populations and serving as prey for larger birds and mammals.
Notable Features
Features extremely keeled scales giving them a rough texture. They possess a specialized anticoagulant in their saliva that prevents blood from clotting quickly, which helps when feeding on slippery fish.