Carnivores in Yellowstone National Park play an important role in the park’s food webs, from large predators such as gray wolves and grizzly bears to smaller hunters such as coyotes, foxes, and weasels. These animals occupy different habitats and feed on a range of prey, including elk, deer, rodents, fish, and insects. Some also scavenge carcasses, providing food for other wildlife and helping return nutrients to the ecosystem.
Yellowstone supports a diverse community of native carnivores, each adapted to particular prey, habitats, and environmental conditions. Their interactions—including competition for food, hunting, and scavenging—shape relationships among wildlife across forests, grasslands, rivers, and mountain landscapes. Understanding these species helps explain how carnivores contribute to Yellowstone’s ecological diversity.
Table of Contents
Quick Reference: Carnivores in Yellowstone National Park
| Carnivore | Main Food Sources | Habitat |
|---|---|---|
| Grizzly Bear | Elk calves, carrion, roots, berries, pine nuts | Meadows, river valleys, forests |
| Black Bear | Berries, roots, insects, small mammals | Forests, wooded areas |
| Gray Wolf | Elk, deer, occasionally bison calves | Forests, valleys, open landscapes |
| Coyote | Rodents, rabbits, birds, insects, carrion | Meadows, grasslands, open valleys |
| Cougar | Deer, elk, other ungulates | Forests, cliffs, rugged terrain |
| Canada Lynx | Snowshoe hares, other small prey | Cold, forested mountain habitats |
| Red Fox | Rodents, birds, insects, carrion | Meadows, forest edges, valleys |
| Wolverine | Carrion, small mammals, other prey | Remote mountain backcountry |
| River Otter | Fish, amphibians, crayfish | Rivers, streams, lakes, wetlands |
| Bobcat | Small mammals, birds | Habitats with suitable cover |
| Marten | Rodents, birds, small animals | Forests |
| Badger | Rodents and other ground-dwelling animals | Open areas, diggable soils |
| Weasels | Rodents and other small animals | Various habitats |
Grizzly Bear (Ursus arctos horribilis)
Grizzly bears are among the most iconic carnivores in Yellowstone National Park. They occupy a variety of habitats across the park, particularly meadows, river valleys, and forested areas, where food availability changes with the seasons. Although they are powerful predators, grizzly bears are omnivores with a diverse diet that includes elk calves, carrion, roots, berries, and pine nuts. This dietary flexibility allows them to take advantage of different food sources throughout the year and adapt to seasonal changes in availability.
As major predators and opportunistic scavengers, grizzly bears influence Yellowstone’s wildlife and natural processes in several ways. By preying on young ungulates, including elk calves, they contribute to predator–prey relationships that can affect herbivore populations and patterns of vegetation use. They also consume carrion and may leave remains that provide food for other scavengers, including ravens, foxes, and coyotes. Their ecological influence extends beyond feeding: grizzlies often dig for roots and other foods and overturn logs while foraging. These activities disturb and aerate the soil, expose buried organic material, and help redistribute nutrients, benefiting soil processes and plant communities.
Black Bear (Ursus americanus)
Black bears are common carnivores in Yellowstone National Park and are found mainly in forested habitats, where vegetation provides cover and access to seasonal food sources. Compared with grizzly bears, black bears generally rely more heavily on plant-based foods, although their diet varies with availability. They feed on berries, roots, insects, and small mammals, along with other foods they encounter while foraging. This flexible diet helps them use different habitats and adjust their feeding patterns as the seasons change.
Black bears contribute to Yellowstone’s ecosystem through their feeding habits and interactions with other wildlife. By consuming fruits and berries, they can disperse seeds through their droppings, helping some plants spread to new areas. Their foraging also moves organic material and nutrients through the environment, while their consumption of insects and small animals forms part of the park’s food web. As both consumers of plant material and opportunistic predators, black bears connect several parts of the ecosystem.
Gray Wolf (Canis lupus)
Gray wolves are among the most influential predators in Yellowstone National Park. Once eliminated from the park, wolves were reintroduced in 1995, restoring a native predator that had been absent for decades. They live and hunt in packs across suitable habitats, including forested areas and open valleys, where they can find and pursue large prey.
Wolves primarily hunt elk, although their diet can also include deer and, when opportunities arise, bison calves. Pack hunting allows them to pursue large prey that would be difficult for a lone wolf to bring down. Their hunting activity can influence where prey animals feed and how they use the landscape. Wolves also scavenge when opportunities arise, and the remains of their kills provide food for other animals, including ravens, coyotes, and eagles.
Coyote (Canis latrans)
Coyotes are among the most widespread and adaptable carnivores in Yellowstone National Park. They inhabit open valleys, meadows, grasslands, and other areas where they can search for prey. Their ability to use a variety of habitats and food sources helps them survive across changing seasonal conditions, even in an ecosystem that also supports larger predators such as gray wolves and cougars.
Coyotes have a varied diet that includes small mammals, particularly rodents, as well as rabbits, birds, insects, carrion, and occasionally young deer. By preying on rodents and rabbits, they help influence populations of these small animals. Their use of carrion also makes them part of Yellowstone’s scavenger community, allowing them to obtain food from animal remains. This flexible feeding behavior helps coyotes occupy an important position in the park’s food web.
Coyotes must also contend with competition and predation from larger carnivores. Gray wolves may compete with them for food and can kill coyotes, while cougars may also pose a threat. These interactions can influence where coyotes forage and how they use available habitat. Despite these pressures, their adaptable diet and behavior allow them to remain a familiar part of Yellowstone’s wildlife community.
Cougar (Puma concolor)
Cougars, also known as mountain lions, are elusive, solitary predators in Yellowstone National Park. They inhabit forested areas, rocky slopes, cliffs, and rugged terrain that provide cover for stalking prey. Unlike gray wolves, which often hunt in packs, cougars generally hunt alone, relying on stealth, powerful hind limbs, and short bursts of speed to ambush their prey.
Deer are an important food source for cougars, and they also prey on elk when conditions allow. Using cover to approach within striking distance, a cougar can bring down prey larger than itself. After a kill, it may cover the carcass with vegetation or soil to conceal it and return to feed over several days. This behavior allows the animal to make use of a large meal while reducing the chance of losing it to competing scavengers.
As predators, cougars contribute to Yellowstone’s predator–prey relationships by hunting deer and other ungulates. Their presence adds another source of predation alongside wolves and grizzly bears, although the effects on prey populations vary with prey availability and other environmental conditions. Cougars are rarely seen by visitors because of their low densities, solitary behavior, and preference for cover, but they remain an important part of Yellowstone’s native carnivore community.
Canada Lynx (Lynx canadensis)
The Canada lynx is a rare and elusive wild cat associated with cold, snowy environments in the Greater Yellowstone Ecosystem. It is adapted to life in dense forests, where deep snow and thick vegetation shape its movements and hunting behavior. Because lynx occur at low densities and are difficult to observe, encounters with them in Yellowstone National Park are uncommon.
Snowshoe hares are the Canada lynx’s primary prey across much of its range. Its large, fur-covered paws help distribute its weight over snow, making it easier to move through winter conditions while searching for food. Lynx may also take other small mammals and birds when opportunities arise. Their reliance on snowshoe hares links their survival and reproduction to prey availability, which can fluctuate over time.
Red Fox (Vulpes vulpes)
Red foxes are adaptable, medium-sized carnivores found in Yellowstone National Park’s meadows, forest edges, and open valleys. Their ability to use a range of habitats and exploit different food sources helps them survive in environments that change with the seasons. Although smaller than wolves and cougars, red foxes are effective hunters that rely on keen hearing, a strong sense of smell, and quick movements to locate and capture prey.
Their diet includes rodents, birds, insects, and carrion, with the foods they consume varying according to seasonal availability. By hunting mice and other small mammals, red foxes influence local prey populations. They also scavenge animal remains when available, making them part of the wider network of predators and scavengers in Yellowstone. This flexible feeding behavior allows them to occupy an important ecological niche without depending on a single food source.
Red foxes share Yellowstone with larger carnivores, including coyotes and gray wolves, which may compete with them for food or space. Coyotes can sometimes displace or kill red foxes, influencing where foxes forage and seek shelter. Despite these pressures, red foxes persist through their adaptability, varied diet, and ability to use habitats ranging from open meadows to forest margins.
Wolverine (Gulo gulo)
Wolverines are elusive members of the weasel family associated with remote, rugged habitats across the Greater Yellowstone Ecosystem. They favor mountainous backcountry, where deep winter snow, extensive forests, and low levels of human disturbance provide suitable conditions. Because they occur at low densities and range over large areas, wolverines are rarely seen by visitors to Yellowstone National Park.
Wolverines are opportunistic feeders that both hunt and scavenge. Their diet includes carrion, particularly the remains of animals that died during winter, as well as small mammals and other prey they can capture. Their powerful jaws and teeth help them consume frozen meat and bones, allowing them to use food sources that may be difficult for other carnivores to access. By feeding on carcasses, wolverines contribute to the movement of nutrients through the ecosystem and make use of animal remains that persist in cold conditions.
River Otter (Lontra canadensis)
River otters are semi-aquatic carnivores that inhabit Yellowstone National Park’s rivers, streams, lakes, and wetlands. Their streamlined bodies, webbed feet, and strong swimming abilities allow them to move efficiently through the water while searching for prey. Otters use aquatic habitats for feeding and travel, although they also come ashore to rest, groom, and move between waterways.
Fish make up a major part of the river otter’s diet, but these skilled hunters also eat amphibians, crayfish, and other aquatic animals when available. Their flexible diet allows them to take advantage of prey found in different waterways and seasons. By feeding on aquatic animals, river otters form part of Yellowstone’s freshwater food webs and connect aquatic ecosystems with the surrounding landscape.
Other Carnivores in Yellowstone National Park
In addition to grizzly bears, black bears, gray wolves, and other well-known predators, Yellowstone National Park and the surrounding Greater Yellowstone Ecosystem support several smaller and less frequently observed carnivores. These species occupy different habitats and use a variety of hunting and foraging strategies, adding to the region’s diverse carnivore community.
Bobcats inhabit areas with suitable cover, where they hunt small mammals and birds. Pine martens are associated with forested habitats and prey on rodents, birds, and other small animals. Weasels are small, active hunters that feed mainly on rodents and other small prey. Badgers use their powerful forelimbs and claws to dig for ground-dwelling animals, particularly rodents. Each species exploits food sources and habitats suited to its size and behavior.