FACT: Wolves kill to sustain themselves. Killing elk and deer can be difficult and dangerous for wolves. It is not uncommon that they are fatally wounded by a kick from a hoof, and 80 to 90% of the time their efforts are unsuccessful. If they do succeed, the food left unfinished by wolves feeds numerous other animals, including scavengers such as bears, eagles and wolverines.
Wolves are timid creatures and therefore are often frightened away from a kill by the presence of people or by other predators. This creates the assumption that wolves kill and leave the remains behind. In reality, research has shown that wolves almost always eat the entire carcass, returning to this food source all winter long. Many predators do this.