a wild animal that looks like a large dog and lives and hunts in groups.——朗文当代大辞典

A somewhat large canine animal ( Canis lupus) found in Europe, Asia, and N. America, hunting in packs, and noted for its fierceness and rapacity. Also applied, with or without defining word, to various other species of Canis resembling or allied to this: see also prairie wolf n. at prairie n. Compounds 2, timber-wolf n. at timber n.1 Compounds 2.——牛津当代大辞典  @en