Eastern Cottontail Rabbit

The Eastern Cottontail Rabbit, Sylvilagus floridanus, is a lagomorph (Order Lagomorpha, Family Leporidae), not a rodent, measuring 38-50 cm in length and weighing 0.8-1.5 kg, characterized by soft grayish-brown fur and a distinctive white 'cotton-ball' tail. Females, known as does, reach sexual maturity at 2-3 months and can produce 3-5 litters annually, typically from March to September, with each litter comprising 3-8 altricial young. Gestation lasts approximately 28-30 days, and neonates are blind and helpless, weighing only 25-30g at birth, maturing rapidly for dispersal within 4-5 weeks. Their lifespan in the wild is short, averaging less than one year due to predation, though individuals in protected environments can live for 5-8 years. Environmental tolerances include a wide range of temperatures, but prolonged sub-zero conditions without adequate shelter or deep snow cover can increase mortality due to food scarcity and energetic demands.

Eastern Cottontails exhibit crepuscular activity patterns, being most active at dawn and dusk, although they may forage nocturnally under moonlight or during periods of high predation pressure. They are largely solitary animals, communicating primarily through scent marking, foot thumping to signal danger, and occasional vocalizations like distress calls. Their feeding ecology is herbivorous and opportunistic, primarily browsing on a wide variety of grasses, forbs, and succulent vegetation, with a crucial shift to woody stems, bark, and buds of trees and shrubs during winter when herbaceous forage is scarce. Defensive behaviors include freezing, rapid zig-zag running, and relying on camouflage, while their structural impact involves girdling young trees and shrubs, consuming garden crops, and potentially introducing ectoparasites like fleas and ticks into human-occupied spaces, though they are not a significant public health vector for serious diseases.