Canids will scrape near the scent deposit to spread the scent around and let other canids know whose territory they're in. Wolves and other animals, including bears and cougars, will cover partially eaten meat with dirt. You should never approach one of these camouflaged carcasses because the animal may not be far away. Bears and cougars will defend these partially eaten carcasses. Wolf packs may or may not, but it's best not to take the chance.
Wolves have a complex vocal communication system.
They use yelps, whines, growls and body language to communicate amongst themselves. Posture is used to indicate the wolf's position in the pack. Submission to a dominant pack member is indicated by a cowering stance and whining. The submissive wolf will lick the dominant wolf's face. A wolf will growl, snarl, lay back its ears, and raise the hair on its back to let another wolf know to back off.