Get off my land!
Wolves are very territorial and communicate with neighbor packs by howling and scent-marking. It is always prudent to try to repel strangers with shows of strength, rather than risk fighting. But wolves will battle if the numbers are in their favor. Yellowstone's Northern Range is home to 8-10 packs that staunchly defend and try to expand their hunting grounds and homes. Conflicts between packs are common and, within the park, are the leading cause of death for a wild wolf.