Wolves are carnivores that feed primarily on large hoofed mammals like elk, deer, and moose. But their diet is far more varied than most people realize, shifting dramatically by season, geography, and what’s available. Coastal wolves eat salmon, summer wolves gorge on berries, and opportunistic packs will hunt everything from beavers to hares when big game is scarce.
Large Prey: The Foundation of a Wolf’s Diet
Large hoofed animals make up the bulk of what wolves eat year-round. In North America, the primary targets are elk, white-tailed deer, mule deer, moose, caribou, and bison. In Yellowstone National Park, wolves feed primarily on elk despite having access to several other large species. European wolves rely heavily on red deer, roe deer, and wild boar, while wolves in central Asia hunt saiga antelope and argali sheep.
Wolves are built for this kind of hunting. They chase prey over long distances, testing herds to identify the weakest, oldest, or youngest animals. Hunting success varies enormously depending on the target. A lone wolf trying to take down an elk succeeds about 14% of the time, but a lone wolf going after a bison has roughly a 1% success rate. Bison are so much harder to bring down that packs need around 11 wolves to reach peak capture efficiency, compared to just 4 wolves for elk. Interestingly, larger packs hunting elk don’t do much better than groups of four, because individual wolves in big groups tend to hold back effort and let others do the work.
How Much Wolves Eat
An adult gray wolf eats around three to four pounds of food per day on average, but that number is misleading because wolves don’t eat on a regular schedule. They may go days between kills, then consume enormous amounts in a single feeding. A wolf can eat up to 20 pounds of meat in one sitting after a successful hunt. This feast-or-famine cycle means their “daily average” is spread across periods of gorging and periods of nothing at all.
Salmon, Marine Life, and Coastal Diets
Wolves living along the Pacific coast of Alaska and British Columbia have developed a surprisingly fish-heavy diet. Salmon accounts for about 20% of what coastal mainland wolves eat and up to 25% for some wolves on Prince of Wales Island in Southeast Alaska. Interior wolves, farther from rivers, still get roughly 10% of their diet from salmon during spawning runs.
Some coastal wolf populations near Yakutat, Alaska, show an extremely high reliance on marine food sources, comparable to coastal black and brown bears. These wolves feed on spawning salmon in streams, scavenge marine mammal carcasses on beaches, and pick through intertidal zones for whatever they can find. It’s a reminder that wolves adapt their diet to whatever the landscape provides.
Small Prey and Opportunistic Hunting
When large prey is scarce or seasonal conditions shift, wolves readily switch to smaller animals. Beavers are a particularly important secondary food source. In some areas with high beaver densities and low deer numbers, beavers actually become the primary summer prey. One study tracking wolf kill sites found that beavers made up more than half the kills identified, outnumbering deer. Wolves catch beavers near water’s edge, typically when the animals are on land building dams or foraging.
Snowshoe hares, rabbits, ground squirrels, voles, and other rodents also appear in wolf diets, especially during summer when these animals are abundant and active. Wolves have been documented killing birds, including species as large as great blue herons. None of these provide as many calories as a single elk, but they fill gaps between big kills.
Berries, Grass, and Plant Foods
This surprises many people: wolves eat a significant amount of plant material during summer months. A study in northeastern Minnesota found that berries, primarily blueberries and raspberries, composed 56 to 83% of weekly diet biomass through mid-August. That’s not a rounding error. For several weeks in summer, wild fruit was the dominant food source by weight.
Wolves also eat grass occasionally, likely to aid digestion or address stomach irritation, similar to domestic dogs. Summer scat analysis consistently shows a much more varied diet than winter, with vegetation appearing regularly alongside animal remains.
Scavenging and Carrion
Wolves are primarily active hunters, not scavengers. Fresh wolf-killed prey accounts for about 72% of their total consumption time. Scavenging makes up only 6 to 13% of feeding time, depending on the season and circumstances. Solitary wolves scavenge more than pack members, which makes sense since a lone wolf has a much harder time bringing down large prey.
Winter is when scavenging peaks. Two factors drive this: some prey animals die of starvation in late winter when their body condition is at its lowest, and cold temperatures keep carcasses fresh longer, making them available for days or even weeks. In warmer months, carcasses decompose quickly and attract competing scavengers, reducing their value.
How Pups Are Fed
Wolf pups are born in spring and nurse for their first few weeks. The transition from milk to solid food involves one of the more remarkable behaviors in the wolf world: regurgitative feeding. After eating at a kill site, adult wolves return to the den and regurgitate partially digested meat for the pups. Pups instinctively lick and sniff at an adult’s muzzle to trigger this response, and the returning wolf will either regurgitate on the spot or rush several hundred yards away before doing so.
This isn’t limited to the parents. Other pack members, sometimes called helpers or auxiliaries, also carry food back to pups, both by regurgitation and by physically carrying chunks of meat in their mouths. Observations of this behavior have been documented when pups are as young as 10 days old, with the transition from milk to solid food happening gradually over the following weeks. By late summer, pups are eating the same prey as the rest of the pack.
Who Eats First
Feeding order within a wolf pack follows the social hierarchy. The dominant breeding pair, often called the alpha pair, eats first at a kill. Lower-ranking wolves wait their turn, displaying submissive body language: lowering their heads, tucking their tails, and positioning their ears flat. The lowest-ranking wolves eat last and may get the least desirable portions. This hierarchy helps maintain order and reduces dangerous fights over food, though conflicts still happen, especially when prey is scarce and the pack is hungry.