Garbage from dumps comprise 60-70% of entire eating regimen. In addition to that, fruits and berries round out the rest of the diet (Mech and Boitani).
The feeding pattern of Canis Lupus is indicative of its nomadic nature. Depending on the pack, size of the kill, availability of other prey and hunger level, Canis Lupus will stay near the kill for several days (Harrington and Mech 1979). Due to its predisposition to migrate from place to place, food can be hard to come by. Luckily there have been evolutionary traits that Canis Lupus has gained through trial and error that have allowed it to survive the lean season. In preparation for the possibility of not seeing a consistent meal for extended periods of time Canis Lupus will gorge itself by taking in up to ten kilos (22 lbs.) at a time (Mech and Boitani 2003) or in an act of desperation will fast for months if necessary by burning fat to preserve its life. In keeping with the rules of nature, most notably survival of the fittest, Canis Lupus feed based on a predetermined hierarchy. The dominant, breeding male or female eat first