wolverine a stocky muscular predator adapted to the harsh arctic and subarctic environments of north america and

stocky muscular arctic subarctic north america eurasia regions carnivorous predatorprey hunting adaptation fur thick coat protection insulation cold climate taiga boreal forest woodlands wilderness remote coldadapted selection pressure competition survival strategies reproduction breeding gestation litter pups kits foraging prey adaptability dense powerful jaws challenging environment physical characteristics life cycle environmental pressures conservation mammalian mammal