Size
Males 12-18 kg
Females 8-13 kg
Reproduction
Mating: June - August
Birth: January - March
Litter size: 1-5, normally 2-3
Diet
Wide range of species from reindeer to rodents. Much food comes from scavenging, but can kill domestic sheep and semi-domestic reindeer.
Social organisation
Solitary and territorial - little overlap with members of same sex.
Home ranges
Vary from 100 to 500 km2 for males and 100 to 200 km2 for females.