Identity, age class at the end of the study (young: 6 mo to 1 yr; sub-adult: 1 yr to 2 yr; adult: more than 2 yr), gender, pack membership, standardized dominance rank, leadership score, mating pattern and denning location (inside the core area, inside the home range of the pack and at other places

Male mating success = number of copulation ties. Female reproductive success = number of puppies survived to maturity.