Coyotes will absolutely eat rotten meat. Carrion, including meat in various stages of decay, makes up roughly 25 percent of the average coyote diet based on stomach-content analysis of over 8,000 coyotes across western states. Far from being a last resort, scavenging decomposing carcasses is a routine part of how coyotes feed themselves year-round.
How Carrion Fits Into the Coyote Diet
Coyotes are true opportunists. Their diet breaks down to about 33 percent rodents, 17.5 percent rabbits, 25 percent carrion, 3.5 percent deer, and smaller percentages of birds and livestock. That carrion slice includes roadkill, winter-killed deer, remains left behind by larger predators, and any other dead animal they encounter. Some researchers have noted that coyotes actually leave behind more carrion than they consume, meaning they regularly encounter decaying meat and simply eat what suits them at the time.
In urban and suburban areas, the picture shifts even further toward scavenged food. A study using scat and stable isotope analysis found that human food sources (garbage, fruit from ornamental trees, and domestic cats) accounted for 60 to 75 percent of urban coyote diets. Suburban coyotes were somewhat less reliant on human leftovers, with up to 38 percent of their diet coming from discarded food. The point is that coyotes don’t need meat to be fresh. If it’s available and edible enough, they’ll take it.
Why Rotten Meat Doesn’t Make Them Sick
Coyotes can handle decaying meat because their stomachs are far more acidic than those of most other animals. Facultative scavengers, a category that includes coyotes, maintain stomach acid at a pH around 1.8 on average. That’s acidic enough to break down tough animal proteins and, more importantly, to kill many of the bacteria that thrive in rotting flesh. Obligate scavengers like vultures push even lower, around 1.3 pH, but coyotes aren’t far behind.
This extreme acidity serves as a biological filter. Protein digestion requires an acidic environment in the pH 2 to 4 range to activate the enzymes that break meat down. But the acidity does double duty: it also destroys a significant portion of the foodborne pathogens that colonize decaying tissue. Researchers have proposed that any animal regularly eating carrion or prey that’s closely related to itself needs this kind of chemical defense to prevent dangerous microbes from establishing themselves in the gut.
That said, the system isn’t bulletproof. Coyotes can and do pick up infections from what they eat and encounter. Wild canids carry a long list of bacterial and parasitic diseases, including salmonella, leptospirosis, tularemia, and various tapeworms and roundworms. Some of these come from contaminated water or contact with infected prey rather than from rotten meat specifically, but scavenging increases their overall exposure to pathogens.
Seasonal Patterns in Scavenging
Coyotes scavenge more heavily in winter, and the reasons are straightforward. Research from the University of Georgia found that 88 percent of animal carcasses were scavenged by wildlife in winter compared to just 65 percent in warmer months. Cold temperatures slow down insects and bacterial decomposition, which means a carcass stays intact longer and gives wildlife more time to find and eat it. In summer, flies and microbes break a small carcass down so quickly that there may be little left for a coyote to bother with.
Carcass size matters too. Scavenging of small and medium carcasses jumped nearly 40 percent higher in colder months. Large carcasses were scavenged at similar rates regardless of season, likely because they take longer to decompose no matter the weather. Coyotes were among the primary consumers of large carrion alongside vultures and eagles, while smaller carcasses attracted raccoons, opossums, and foxes in addition to coyotes.
Winter is also when fresh prey becomes harder to find. Snow cover reduces access to rodents, and many small mammals are less active. A frozen deer carcass on the landscape becomes a reliable, high-calorie food source that a coyote will return to repeatedly over days or even weeks.
Coyotes Are Attracted to the Smell of Decay
Coyotes don’t just tolerate rotten meat. They’re drawn to it. Research on coyote scent preferences found that putrefied deer was among the most attractive odors tested, ranking alongside lamb fat extract and several commercial trapping lures. The smell of decomposition essentially acts as a dinner bell, signaling a free meal from potentially long distances. This makes evolutionary sense: an animal that can detect, locate, and safely digest carrion has a major survival advantage, especially in lean times.
Why You Shouldn’t Leave Meat Out for Coyotes
Knowing that coyotes eat rotten meat, some people might consider leaving out old meat scraps. This is a bad idea for several reasons. The USDA’s Wildlife Services program specifically warns against feeding coyotes or any wild animals. Human food, including spoiled meat, is not nutritionally equivalent to what coyotes eat naturally, and packaging materials like plastic wrap or foil can cause illness or injury if consumed alongside the food.
The bigger problem is behavioral. Coyotes that associate a location with easy food will keep returning. They lose their natural wariness of people and can become aggressive. Animals that cross that line often end up being killed by wildlife management authorities. Concentrating multiple coyotes around a food source also increases the chance of disease spreading both among the animals and potentially to pets or people. If coyotes are scavenging in your area, securing garbage cans and not leaving pet food outside does more good than intentionally feeding them ever could.