Data from wolf predation studies carried out in Scandinavia (2001-2015) and Yellowstone National Park (2008-2015).

Excel file of data from wolf predation studies carried out in Scandinavia (2002-2015) and Yellowstone National Park (2008-2015). Data include: study system (Scandinavia or Yellowstone), study season (spring or summer), study year, pack ID (pack name/territory), wolf ID (identity of each wolf followed – Yellowstone only), unique kill ID (identity number associated with each wolf killed carcass – Yellowstone only), kill interval (time to next kill in days), bear presence (Scandinavia – absent or present in the study system; Yellowstone – absent or present at carcass site), Julian date (date of wolf kill), prey type (Scandinavia spring study – adult (i.e., > 1 year) or calf (i.e., < 1 year) moose; Scandinavia summer study – neonate or non-neonate moose (i.e., newborn calf or adult/yearling); Yellowstone summer study – large (i.e., elk, bison, or moose ≥11 months) or small (i.e., any neonate, or adult deer, bighorn sheep, or pronghorn) ungulate), pack size, road (distance from wolf kill to the nearest road in kilometers), scavenge (the number of carcasses wolves visited between kills – Yellowstone only), moose density (number of moose harvested/km2 averaged over the territory – Scandinavia only), and snow depth (snow depth on date of kill, measured in meters, recorded at the meteorological station closest to each territory – Scandinavia spring study only).