 Eighty to ninety percent of moose are brought down by wolves rather than directly by disease, and each wolf kills an average of between 0.44 and 1.69 moose per month.Wolves on the island have, historically, been separated into three or four packs, with each pack usually having between three and eight members, including two or three pups.The number of wolves in a pack depends mainly on the amount of snow that fell in the previous winter.