Do Wolves and Coyotes Get Along in the Wild?

Wolves and coyotes do not get along. When the two species share a landscape, wolves act as dominant aggressors, chasing and sometimes killing coyotes in the vast majority of their encounters. In Yellowstone National Park, wolves initiated about 85% of confrontations and came out on top in roughly 91% of them. Yet “not getting along” understates how layered the relationship is. Coyotes are not passive victims; they adjust where they roam, when they are active, and how they behave around food to coexist with an animal that can easily overpower them.

What Happens When They Actually Meet

Most encounters between wolves and coyotes are one-sided. A long-running study of direct interactions in Yellowstone found that wolves almost always started the confrontation and almost always won it. In roughly four out of five cases, wolves simply chased coyotes away without making physical contact. But about 7% of observed interactions ended with a dead coyote, and in the majority of those fatal encounters, wolves outnumbered the coyotes they killed.¹ These are not fights between evenly matched rivals. An adult gray wolf weighs three to four times what a coyote does, and wolves hunt in packs that amplify that advantage.

The word “competition” in the scientific literature is doing some heavy lifting here. Biologists call this “interference competition,” meaning one species actively suppresses the other through aggression rather than simply eating the same food. The relationship is closer to a bully-and-target dynamic than to two equally matched competitors vying for the same resource.

How Coyotes Redraw Their Maps

You might expect coyotes to simply avoid wolf territory altogether, but the relationship is more nuanced than that. Research in Grand Teton and Yellowstone National Parks found that mean coyote densities were about 33% lower at sites where wolves were abundant, and densities dropped roughly 39% in Yellowstone after wolves were reintroduced in the mid-1990s.² Wolves were responsible for more than half of transient coyote deaths in those study areas, and coyotes captured in wolf-rich zones dispersed at rates more than double those of coyotes in wolf-free zones. So wolves do thin out coyote numbers and push individuals to move on.

But resident coyotes that stick around do not simply flee to opposite ends of the landscape. A study of sympatric canids found that coyotes actually used much of the same space as wolves. Rather than generalized avoidance, coyotes treated the threat as spatially specific: the real danger was concentrated around wolf-killed carcasses, not spread evenly across wolf territory.³ Coyotes seemed to perceive the risk of a violent encounter as a localized hazard they could work around, not a blanket reason to abandon the area. They adjusted their movements based on signs of recent wolf activity and the presence of food worth fighting over.

Shifting the Clock

If you cannot avoid the neighborhood, you can at least avoid the neighbor’s schedule. In some regions, coyotes shift when they are active to reduce the odds of bumping into wolves. One study in the Northern Rockies found that coyotes in wolf-occupied areas became significantly more active during dawn, daylight, and dusk compared to coyotes in wolf-free zones, with the biggest increase during daytime hours.⁴ Wolves tend to be most active at night and around twilight, so a coyote that does its foraging in broad daylight has a better chance of avoiding trouble.

The picture is not universal, though. Research from Yellowstone found that coyotes did not consistently avoid wolves by changing their active hours; activity overlap between the two species remained high across different time periods.⁵ The difference may come down to landscape and prey conditions. In Yellowstone’s open valleys, coyotes may not have the luxury of retreating into a different time window because their food sources are tied to specific conditions. In more forested terrain where wolves recently recolonized, the temporal dodge seems to work better. The lesson is that coyotes are flexible, but they cannot always find a clean escape route.

The Scavenging Gamble

One of the strangest elements of the wolf-coyote relationship is that wolves are both the coyote’s biggest threat and one of its most important food providers. Wolves kill large ungulates like elk and deer, and the leftovers represent a major caloric windfall for scavengers. Coyotes rank among the most effective scavengers at wolf-killed carcasses in places like Yellowstone, outcompeting birds and smaller carnivores when wolves are not physically present at the kill site.⁶

But accessing that food is a calculated risk. In Denali National Park, trail camera data showed that carrion use was dominated by wolves and wolverines, with coyotes and red foxes trailing behind. Scavenging animals appeared to manage risk primarily by reducing how often they visited carcasses, and some showed heightened vigilance at busy feeding sites.⁷ When coyotes do approach a wolf-killed carcass, they often rely on strength in numbers and heightened aggression to hold their ground, at least briefly.³ A lone coyote skulking around a fresh elk kill is in grave danger. A pack of four or five coyotes, acting aggressively, has better odds of grabbing a meal and clearing out before the wolves return.

What Each Species Actually Eats

Despite sharing the same general habitat, wolves and coyotes eat quite differently, and that dietary separation is part of what allows them to coexist at all. A DNA-based diet analysis from northeastern Washington State found that wolves overwhelmingly ate deer and moose, with those two prey groups making up about 90% of wolf diet by frequency. Coyotes in the same area also ate some deer and moose, but their most common prey item was snowshoe hare, appearing in over 60% of coyote diet samples.⁸

This partitioning makes intuitive sense. Wolves are built to chase down and bring down large-bodied prey. Coyotes are generalists, eating everything from rabbits and rodents to berries and insects. They can and do take deer, especially fawns, but they lack the size and cooperative hunting power to target healthy adult ungulates the way wolves do. The overlap is real but partial, and it is heaviest in winter when coyotes scavenge wolf kills of deer and elk rather than hunting them independently.

They Talk to Each Other

One of the more surprising findings in recent years is that wolves and coyotes engage in vocal back-and-forth. A playback experiment testing whether wolf howls silence coyotes found the opposite: coyotes responded to wolf calls at rates higher than what would be expected by chance. Wolves, for their part, also responded to coyote vocalizations at above-chance rates.⁹ Rather than going quiet to hide from a dangerous neighbor, coyotes seem to participate in what researchers described as a complex communication network between species.

Why would a coyote answer a wolf? One possibility is that howling serves a territorial advertisement function for both species. A coyote that hears a wolf howl in the distance gets information about where the wolves are, which is genuinely useful for deciding where to forage. Answering back may also help coyotes gauge how far away the wolves are and whether the direction of travel poses an immediate risk. Whatever the reason, the vocal landscape these canids share is far more interactive than a simple predator-prey silence.

What Happens When Wolves Disappear

The best evidence for how much wolves shape coyote populations comes from looking at what happens when wolves are removed from a system. Across the American West, the historical extirpation of wolves has been linked to dramatic expansion in coyote range, abundance, and ecological influence.¹⁰ Before European colonization, coyotes were largely restricted to the Great Plains and arid West. As wolves were hunted and poisoned out of most of the continent over the nineteenth and twentieth centuries, coyotes filled the void and now occupy almost every habitat type in North America, from wilderness to suburban backyards.

The cascading effects reach well beyond coyotes themselves. A continent-wide analysis found that in areas where wolves have been extirpated, coyotes outnumber red foxes, but in areas where wolves are still present, red foxes outnumber coyotes.¹¹ Wolves suppress coyotes, and coyotes suppress foxes, so removing the top layer releases the middle one, which then hammers the bottom one. This pattern plays out even further down the food chain. In areas near a wolf den in Montana, rodent numbers (particularly voles) increased significantly over a three-year study, while rodent numbers stayed flat in areas farther from the den where coyotes were not being suppressed.¹² Wolves reshape entire ecosystems in part by keeping coyote numbers in check.

When the Species Lines Blur

For all their hostility, wolves and coyotes are close enough genetically to interbreed and produce fertile offspring. Hybridization between the two has been documented repeatedly, though the circumstances under which it happens are telling. It tends to occur not when both populations are healthy and abundant, but when one species, usually wolves, has been severely depleted.

A well-documented case comes from Algonquin Provincial Park in Ontario. Research culls in the 1960s killed a large proportion of eastern wolves in a study region at precisely the time coyotes were colonizing the area. After the culls, scientists detected a significant decrease in the characteristic eastern wolf genetic signature and an increase in coyote DNA in the park’s wolf population.¹³ Heavy human harvesting of wolves essentially broke down the social and numerical barriers that normally keep the species reproductively separate. When few wolves remain and potential wolf mates are scarce, a lone wolf is more likely to pair with a coyote than go without breeding entirely.

The situation for red wolves in the southeastern United States tells a more complicated story. Red wolves, which some researchers consider a distinct species and others view as a historical wolf-coyote hybrid, were reintroduced to eastern North Carolina starting in 1987 and immediately faced a coyote population that had colonized the region during the red wolf’s absence. Genetic analysis of the resulting contact zone found that hybridization between red wolves and coyotes was less common than expected. Hybrids made up a limited portion of the population and were scattered evenly rather than concentrated in the contact zone, suggesting that crossbreeding was an isolated, local occurrence rather than a systematic erosion of the species boundary.¹⁴

Disease at the Interface

Anywhere two closely related species share a landscape, they also share parasites and pathogens. Health surveys of red wolves and coyotes living side by side in North Carolina found that the most common parasites in both species were heartworm, hookworm, and the bacterium Ehrlichia. Several individuals of both species also tested positive for the bacterium that causes Lyme disease. Coyotes carried a richer parasite community overall, raising the concern that they could serve as a disease reservoir for the rarer red wolves.¹⁵

This is a conservation headache. Even if hybridization between wolves and coyotes stays limited, disease spillover from a widespread, abundant species (coyotes) into a critically endangered one (red wolves) can undermine recovery efforts. The same principle applies, though less urgently, to gray wolves recolonizing areas saturated with coyotes. Mange, canine distemper, and parvovirus can all move between the two species. Managing one species’ health increasingly means accounting for the other.

How Human Management Reshapes the Relationship

Humans do not just observe the wolf-coyote dynamic; they actively alter it. In systems where wolves prey on bighorn sheep, wildlife managers face an awkward trade-off. A study of predator-prey dynamics in a mountain sheep system found that wolves were the primary predators of adult ewes, while coyotes were the main predators of lambs, and wolves were the leading source of coyote mortality.¹⁶ Removing wolves to protect ewes could trigger a coyote population boom that kills more lambs. Whether wolf removal helps or hurts sheep depends on how strongly coyote numbers bounce back, a variable that is difficult to predict in advance.

Predator control also changes the behavioral relationship between wolves and their neighbors. Research found that wolves shifted their activity into nighttime hours following lethal control operations, reducing their temporal overlap with coyotes and other mostly daytime species.¹⁷ Fewer overlapping hours means fewer encounters, which means less suppression of coyotes through both direct killing and fear-based behavioral displacement. In other words, even lethal control efforts that do not eliminate wolves entirely can loosen the grip wolves hold on coyote behavior and abundance, potentially allowing coyote populations to swell and cascade effects to ripple outward.

How Snow and Terrain Tilt the Balance

Physical landscape features play a quieter but real role in how wolves and coyotes interact. Coyotes are lighter than wolves and sink deeper into soft snow, which limits their mobility and foraging efficiency in winter. Research in high-elevation landscapes found that coyotes increasingly relied on packed snowmobile trails as winter deepened and snow became less supportive. When the snowpack was shallow or firm enough to walk on, coyotes moved freely off-trail; when it was deep and powdery, they funneled onto compacted routes.¹⁸

Wolves, with their longer legs and larger foot-loading surface, handle deep snow more easily. This gives wolves a winter advantage in pursuit and coyotes a reason to stick to packed corridors. Human-created trails can inadvertently help coyotes access deeper backcountry areas they might otherwise avoid in midwinter, potentially shifting the spatial dynamics between the two species in subtle ways that have not been fully studied. The physical environment is a silent third party in every wolf-coyote interaction, shaping who can go where and how fast they can get there.