This package contains behavioral, demographic, and environmental data from a study investigating the role individual capture history plays in shaping foraging and defensive behaviors of eastern copperheads (Agkistrodon contortrix) at a ~0.1 hectare recreational site in the Daniel Boone National Forest, Wolfe county, Kentucky. Behavioral data was collected using a four-stage trial simulating in-situ encounters between humans and vipers, where each stage is scored on a 0-3 scale according to the most extreme behavior exhibited. Each individual's total score was the sum of scores in Stages 1-4. Snakes were located via nightly visual surveys of the site during copperheads' active season. Each copperhead was caught after the conclusion of its' behavioral trial, and demographic information including sex, mass, snout-vent length, and total length were recorded. For snakes that had been detected and tagged at this site previous, PIT tag ID and number of years the individual was previously recaptured were also recorded. Air temperature, relative humidity, and soil temperature at a depth of 3 cm were recorded. Within our study system, result suggest that copperheads' defensive response to human approach is best explained by individual capture history, as opposed to temperature or body size.