Our research quantified core use areas to inform management efforts to protect dens from disturbance by using empirical **data** to describe wolf space use and movement patterns. Although we did not specifically evaluate wolf tolerance of human disturbance, we believe that these **data** reflect habitat and space requirements around active den sites during the denning period when pups are most vulnerable. Based on our results, the current recommend buffer does not encompass denning use areas. Despite breeding wolves having smaller core use areas (and corresponding den buffer widths), the mean distance of the edge of their core home range from the active den still exceeded the current recommended forest buffer distance (366 m) around the den site by nearly 2 (734 m) to more than 6 times (2308 m). When considering the non-breeding pack members associated with an active den site, the mean core home range edge further exceeded the buffer distance recommended for both Table 3. Monitoring period by pack and season (pup-rearing: 15 April-31 July, late summer: 1 August-14 October, fall: 15 October-31 December, and late winter: 1 January-14 April), and wolf pack home range size (km 2 ) estimated with minimum convex polygons (MCP) and autocorrelated kernel density estimators (AKDE), Prince of Wales Island, Alaska, USA, 2012-2016.