Raccoons are omnivores. They eat a wide mix of plant and animal foods, from acorns, corn, fruits, and berries to insects, crustaceans, and small vertebrates.1PubMed Central. Tooth Function of the Northern Raccoon (Procyon lotor) and Adaptations to Omnivory in the Order Carnivora The confusion around this question comes from the fact that raccoons belong to the biological order Carnivora, a label that sounds like it should settle the matter but actually tells you very little about what any given species eats.
A “Carnivoran” That Is Not a Carnivore
Carnivora is a taxonomic order, essentially a branch of the mammalian family tree. It includes wolves, bears, seals, weasels, and cats, but membership in the club does not mean an animal eats only meat. The name reflects the group’s evolutionary ancestry: early carnivorans were predators, and certain traits like forward-facing eyes and specialized cheek teeth (called carnassials) trace back to that meat-eating past. Over tens of millions of years, though, many lineages drifted toward different diets. Giant pandas eat almost nothing but bamboo. Many bears are thoroughly omnivorous. Raccoons and their relatives in the family Procyonidae followed a similar path, evolving to exploit a broad range of food sources rather than specializing in hunting.
So calling a raccoon a “carnivoran” is technically correct. Calling it a “carnivore” in the dietary sense is not. The distinction matters because it clears up a genuinely common misunderstanding: raccoons did not just recently start raiding trash cans and eating plant material as a compromise. Their bodies have been adapted for an omnivorous diet for a very long time.
Teeth Built for Grinding and Crushing
If you could examine a raccoon’s skull next to a wolf’s, the difference in teeth would tell the story immediately. Wolves have tall, blade-like carnassial teeth designed for shearing through meat and cracking bone. Raccoon teeth look blunter, flatter, and more varied. A detailed study of raccoon tooth function found that their chewing stroke has two phases, both with a large horizontal component. In plain terms, raccoons move their jaws side to side quite a bit, the way you do when grinding food with your molars. Grinding facets appear on several upper and lower cheek teeth, and abrasion patterns on multiple cusps and basins confirm that crushing is also a major part of how they process food.1PubMed Central. Tooth Function of the Northern Raccoon (Procyon lotor) and Adaptations to Omnivory in the Order Carnivora That grinding-and-crushing combination makes sense for an animal that needs to break down tough plant material like nuts and seeds one day and crunch through crayfish shells the next.
Below the teeth, the raccoon’s digestive system is relatively simple. Raccoons lack a caecum, the pouch-like structure at the junction of the small and large intestines that helps many herbivores ferment plant fiber. Without it, any fermentation of fiber depends largely on the colon, which means raccoons are less efficient at extracting energy from fibrous plant material than animals like rabbits or horses.2Journal of Mammalogy. Changes in Gastrointestinal Characteristics of an Omnivorous Species, the Raccoon, with Lactation and Season This is a telling constraint. Raccoons can eat fruits, grains, and seeds just fine because those plant foods are calorie-dense and relatively easy to digest. But they would struggle on a diet of leaves and grasses the way a deer thrives on them. Their gut is a generalist’s gut: good enough at everything, specialized for nothing.
One interesting result of this generalist design is that a raccoon’s alimentary canal does not appear to change significantly in total capacity with the seasons, even though its diet shifts dramatically throughout the year.2Journal of Mammalogy. Changes in Gastrointestinal Characteristics of an Omnivorous Species, the Raccoon, with Lactation and Season Strict herbivores and ruminants often remodel their guts seasonally as forage quality changes, but raccoons sidestep that problem by switching food sources altogether rather than trying to wring more nutrition from a single type of food.
What Raccoons Eat Through the Year
Raccoon diets are not 50-50 plant-to-animal in every season. The ratio shifts depending on what is available. In spring and early summer, animal protein tends to dominate. Raccoons forage heavily along streams and wetlands for crayfish, frogs, fish, bird eggs, and insects. They are skilled enough predators in these contexts to be the single most frequent nest predator of ground-nesting ducks in some regions. One study using video surveillance at duck nests found raccoons were responsible for visiting about 40% of monitored nests and consuming roughly 53% of all depredated eggs, far exceeding skunks, coyotes, and ravens.3The Journal of Wildlife Management. Duck nest depredation, predator behavior, and female response using video
By late summer and into fall, plant foods become more prominent. Fruits, berries, persimmons, wild grapes, and acorns are all high-energy foods that raccoons seek out aggressively. Corn is another major draw: anywhere raccoons overlap with agriculture, cornfields become a magnet. This autumn shift toward plant-heavy calories is not casual snacking. It is tied to a biological imperative. Raccoons in northern parts of their range enter a prolonged period of reduced activity during winter (not true hibernation, but something close, sometimes called torpor or winter lethargy). Building fat reserves beforehand is critical. At the northern edge of their distribution in Canada, raccoons that had access to grain as an alternative food source maintained remarkably stable autumn body condition across years, reaching about 20% body fat regardless of how natural food supplies fluctuated.4HARVEST. The edge of a species’ range: survival and space-use patterns of raccoons at the northern periphery of their distribution
In warmer climates where winters are mild, raccoons remain active year-round and the seasonal diet swing is less dramatic. But the underlying pattern holds everywhere: eat protein-rich animal foods when they are easy to get, shift to carbohydrate- and fat-rich plant foods when those ripen in abundance.
Hands, Brains, and Foraging Versatility
One reason raccoons succeed as omnivores is that they can physically handle an extraordinary range of food items. Their front paws are remarkably dexterous. Research on raccoon manual skills has confirmed what anyone who has watched one open a latch already suspects: raccoons use vision to identify and reach for objects, but they also make extensive use of touch-based (haptic) movements to manipulate things they cannot see clearly.5PubMed. How skilled are the skilled limb movements of the raccoon (Procyon lotor)? That combination of sight and touch allows them to feel under rocks in a stream for crayfish, peel back husks on an ear of corn, crack open a mussel, or probe into a narrow gap to extract an insect larva. Few other mid-sized predators have that kind of manual versatility.
Their cognitive abilities support this flexibility. When researchers deployed multi-compartment puzzle boxes in the wild, raccoons solved novel extractive foraging tasks and discovered multiple different solution types for each box, showing genuine flexible problem-solving rather than just repeating one learned trick.6PubMed Central. Wild raccoons demonstrate flexibility and individuality in innovative problem-solving Even more striking, raccoons continued exploring and trying new approaches to puzzles even when a previously successful solution was still available.7Animal Behaviour. Raccoons optimally forage for information: exploration–exploitation trade-offs in innovation That willingness to experiment rather than stick with what works is a trait well suited to an omnivore that constantly encounters new food types across seasons and environments.
Raccoons living closer to people appear to learn faster. A study comparing raccoons in recreation zones versus preservation zones found that raccoons in the more human-exposed areas improved their success on puzzle tasks over consecutive trials, while those in less-disturbed zones showed a slight negative trend.8Behavioral Ecology. Exposure to humans and task difficulty levels affect wild raccoons (Procyon lotor) learning Whether this reflects bolder personalities, more experience with novel objects, or some other factor is not fully settled, but the pattern fits with what ecologists observe in cities: urban raccoons are notoriously resourceful at exploiting whatever food sources humans create.
How Urban Life Changes the Raccoon Menu
In cities and suburbs, raccoons encounter a food landscape that would be unrecognizable to their wild counterparts from a few centuries ago. Garbage bins, pet food bowls, compost piles, bird feeders, restaurant dumpsters, and intentional feeding by residents all create a buffet of processed, calorie-dense foods. Stable isotope analysis, a technique that reads chemical signatures in tissue to reveal what an animal has been eating, has shown clear differences between urban and wild raccoons. In the Florida Keys, raccoons from highly developed areas had carbon isotope signatures corresponding to human foods derived from corn-based products, while raccoons from natural areas showed isotope profiles consistent with a more traditional wild diet.9Food Webs. Stable isotopes point to anthropogenic subsidies in northern raccoons at the urban-wild interface
A separate study in Ontario found a related but slightly different pattern: raccoons in agricultural landscapes had the highest corn-derived isotope signatures, while those in increasingly urban areas actually showed lower signatures in some cases, suggesting their urban diet was a patchwork of human food types rather than dominated by any single crop.10Canadian Journal of Zoology. Food subsidies of raccoons (Procyon lotor) in anthropogenic landscapes Regardless of the specific makeup, raccoons with access to human food subsidies tended to be heavier and had higher body condition indices than those eating a fully wild diet.
That extra weight is not necessarily a good thing. Research comparing raccoons across sites with different levels of access to anthropogenic food waste found that raccoons at the highest-access site were significantly heavier and had significantly elevated levels of glycated serum protein, a marker of chronically high blood sugar.11PubMed Central. Enhanced access to anthropogenic food waste is related to hyperglycemia in raccoons (Procyon lotor) In other words, raccoons gorging on human junk food may be developing something resembling prediabetes. Their omnivorous digestive system evolved to handle wild fruits, nuts, insects, and occasional vertebrate prey, not an unending supply of processed carbohydrates and fats. The metabolic consequences are a reminder that “omnivore” does not mean “can eat anything with no consequences.”
Ecological Ripple Effects of Being an Omnivore
Because raccoons eat such a wide range of foods, they plug into ecosystems in ways that a strict carnivore or herbivore would not. Their role as nest predators is one of the most studied and most consequential. Beyond duck nests, raccoons affect nesting success for species ranging from great blue herons and herring gulls to prothonotary warblers and American oystercatchers. The severity varies hugely depending on the species and the local environment. Burrow-nesting seabirds on islands appear to be especially vulnerable: when raccoons were introduced to nesting islands of the ancient murrelet, predation drove sharp population declines and local extinction on some islands within less than a decade.12ARPHA Conference Abstracts. Prioritizing bird conservation under northern raccoon predation: assessing species vulnerability from nesting success By contrast, ground-nesting birds with short generation times and high reproductive output, like mallards and northern bobwhite, seem to buffer the impact more successfully because they can re-nest and produce multiple broods per season.
On the plant side of the ledger, raccoons serve as seed dispersers. When they eat fruits and defecate the seeds elsewhere, they move plant propagules away from the parent tree. A study of tree seeds ingested by raccoons found that germination rates for persimmon seeds were significantly higher after passing through a raccoon’s gut compared to uningested seeds, though hackberry seeds actually germinated at a lower rate after raccoon ingestion.13The American Midland Naturalist. Germination Rates of Tree Seeds Ingested by Coyotes and Raccoons Even where germination rates are not improved, the act of moving seeds to new locations reduces competition with the parent plant and increases the odds that some seeds land in a favorable spot. Research on mayapple dispersal found that raccoon defecation distributed seeds across a very broad range of microhabitats, reaching suitable growing sites in roughly 53 to 54% of cases.14PubMed. Do deer and raccoons defecate in the right place? Fitness consequences of vertebrate seed dispersal for a deciduous forest herb The greatest benefit of that dispersal appears to be simply spreading seeds far and wide, increasing the random probability of hitting a good microsite.
These dual roles as both predator and seed disperser illustrate why raccoon omnivory has such broad ecological reach. Remove raccoons from a habitat and you lose both a check on certain prey populations and a dispersal vector for certain plants. Add raccoons to a habitat where they did not previously exist, as has happened across parts of Europe and Asia where they are invasive, and you introduce both threats simultaneously.
Why “Omnivore” Understates Their Flexibility
Labeling raccoons as omnivores is accurate, but it can make them sound interchangeable with other omnivores like opossums or black bears. In practice, raccoons are unusually flexible even by omnivore standards. Their combination of dexterous forepaws, strong problem-solving ability, seasonal dietary plasticity, and tolerance for human-modified environments makes them one of the most adaptable medium-sized mammals in North America.
That adaptability is why raccoons thrive across such a wide geographic range, from southern Canada to Central America, and across such different habitats, from dense hardwood forests to downtown Toronto. It is also why they have established invasive populations in Europe and Japan after deliberate or accidental introductions. An animal that can switch from eating crayfish in a marsh to raiding a compost bin to cracking open persimmons on a ridge top has very few environments where it simply cannot find something to eat.
For people who encounter raccoons around their homes, understanding the omnivore label in practical terms helps explain raccoon behavior. They are not visiting your yard because they are hungry predators looking for your pets (though they can prey on very small animals). They are visiting because your trash, garden, pet food, or bird feeder represents easy calories for a generalist that is wired to exploit every food source it encounters. Securing those attractants is the single most effective way to reduce raccoon visits, precisely because their omnivorous flexibility means they will simply move on to whatever the next available food source happens to be.
Raccoons as Invasive Omnivores Outside North America
Raccoons were introduced to parts of Europe beginning in the early twentieth century, both through intentional releases and escapes from fur farms. Germany has one of the largest established populations, and raccoons have since spread into France, the Netherlands, and other neighboring countries. In Japan, raccoons were imported as pets in the 1970s after a popular animated television show featured one, and released or escaped animals founded feral populations that now cause agricultural damage and threaten native wildlife.
In these non-native ranges, the raccoon’s omnivory becomes especially problematic because local prey species and plant communities evolved without a generalist predator of this type. Island-nesting seabirds, as noted earlier, are particularly at risk because they have no evolved defenses against a dexterous, climbing, nocturnal predator that is perfectly happy eating eggs, chicks, and adults alike.12ARPHA Conference Abstracts. Prioritizing bird conservation under northern raccoon predation: assessing species vulnerability from nesting success Freshwater mussels, amphibians, and ground-nesting songbirds in European forests face similar pressures. Management programs in several countries now treat raccoons as priority invasive species, and the difficulty of controlling them stems in large part from the dietary flexibility that makes them so hard to starve out or trap selectively. An animal that can eat almost anything does not depend on a single bait or a single habitat, which is exactly what makes omnivory such a successful survival strategy and such a headache for wildlife managers.