Animals That Eat Corn: Benefits, Risks, and How to Feed Safely

Corn isn’t only a household staple but also one of the most widely consumed grains across species. 

From wild birds and mammals to farm and companion animals, the number of animals that eat corn is extensive. So whether you’re looking for a reliable feed option for livestock or are curious about which wild animals are interested in this food source, our guide covers it all. 

Beyond explaining which animals eat corn, we also provide species-specific guidance on how to feed them safely and determine what’s beneficial or harmful. 

What Animals Eat Corn: An Overview by Species Group 

Curious about what animals eat corn plants? 

Corn is eaten across three broad categories: wild animals, farm animals, and companion/domestic animals. It offers high energy density, significant caloric value, and strong feeding appeal, making it a nutritional option for a wide range of species. 

But since different groups of animals consume corn, it’s important to note that the type of corn makes a difference, with whole cobs, cracked corn, shelled kernels, and dried corn behaving differently across species. 

It’s also important to distinguish between wild foraging behavior (animals seeking corn in fields or from feeders) and intentional feeding by humans, as this can influence how frequently and in what quantities corn is consumed. 

Below we dive deeper into the eating preferences, behaviors, and risks of different groups of animals. To learn more about feeding animals beyond corn, check out our wildlife and bird feeding guide. 

What Farm Animals Eat Corn: Benefits, Limits, and Feeding Guidance 

Anyone involved in farming knows that the diet of their livestock is a key factor in maintaining their health. To better understand what role corn can play in different farm animals’ diets, keep reading. 

1. Should Cows Eat Corn? Benefits, Risks, and How Much Is Safe 

Is corn good for cows? 

Yes, corn can be beneficial for cows, as its high energy density makes it especially useful for finishing beef cattle. However, feeding cows corn must be done with caution. 

Since many cattle are used to forage-based (pasture) diets rather than corn-based feeds, corn can lead to bloat and acidosis if not properly managed. To avoid this, introduce corn into their diet gradually, and use it as a supplement rather than their sole feed. 

While corn can be fed whole, cracking or rolling prior to feeding will increase digestibility by 5% to 10%. 

2. Do Pigs Eat Corn? Benefits, Form, and Nutritional Limits 

It’s hard to discuss animals that eat corn without mentioning its role in a pig’s diet. 

In some regions, corn has been found to be the primary energy source for pigs. It’s well-tolerated and widely used in the United States, making it a great option for farmers across the country. 

That said, while pigs can eat corn safely, it’s low in lysine and other amino acids, so it should be part of a balanced diet. 

Typically, dried shelled corn is the standard form used in pig feeding, as it’s easy to store, less prone to spoilage, and provides a consistent energy source. 

3. Do Chickens Eat Corn? How Much Is Safe and When to Hold Back 

Chickens love corn, so it should come as no surprise that it’s a common ingredient in poultry feed. For chickens, we recommend feeding them cracked corn, as it’s easier to digest than whole kernels, which are generally better for larger birds. 

And while it’s a great food source, its high calorie content and low protein levels can lead to weight gain. That’s why it should be used as a nutritious treat rather than a staple; when fed in moderation, corn can be a great supplement to their diet, even supporting egg production and overall vitality. 

4. Can Horses Eat Corn? What Equine Owners Need to Know 

Horses can eat corn, but it requires careful management. Corn is one of the most calorie-dense energy sources in equine diets, making it useful for hard-working or underweight horses but a risk for overweight horses or those prone to laminitis. 

Whole corn is difficult for horses to chew and digest; processed forms like cracked or steam-flaked corn are safer and more digestible.  

In addition to not overfeeding corn to horses, you should avoid feeding them moldy corn at all costs. Horses are particularly sensitive to mycotoxins, which can lead to serious health issues compared to many other livestock. 

5. Do Goats Eat Corn? Feeding Guidelines for Small Ruminants 

Next up: goats. Goats find corn highly palatable. In fact, they enjoy corn so much that it can be used as a training reward or even as an appetite stimulant. 

Like cattle, goats are at high risk of acidosis if corn is introduced too quickly or fed in excess. Rather than using it as a primary feed, shelled or cracked corn should be offered in moderation as part of a forage-based diet.  

6. Do Buffalo Eat Corn? Similarities to Cattle Feeding 

Buffalo (American bison and water buffalo) can eat corn similarly to cattle, with corn commonly used as a high-energy supplement in managed herds. 

However, the same risks apply. Corn should be introduced gradually, fed in moderation, and never replace forage, as grass or hay should remain the foundation of their diet. 

What Wild Animals Eat Corn: Mammals, Rodents, and Companion Animals 

In our journey to identify the animals that eat corn, we have to turn our attention to wild animals. From large mammals like deer to small rodents like chipmunks, here’s what you should know. 

1. Do Deer Eat Corn Cobs? Benefits and Serious Risks 

Yes, deer eat both kernels and cobs. However, it’s important to consider this a treat for deer, as it can be considered “junk food” for them when eaten in large quantities. 

Similar to some of the above animals, corn should be introduced slowly and in small quantities, as it can cause acidosis and enterotoxemia, both of which can be fatal. This is a well-documented concern, with numerous cases of corn-related deer deaths reported. 

When used as a supplement and offered in small amounts, high-quality corn that is free from mold can be given safely. Products like shelled corn kernels can also be used to attract deer. 

2. Squirrels and Chipmunks: Which Corn Formats They Prefer 

Both chipmunks and squirrels eat corn and share many of the same feeding habits. They are enthusiastic foragers and readily eat dried corn on the cob, cracked corn, and shelled kernels. 

While corn isn’t harmful when fed in moderation, it’s not nutritionally complete, so it’s best offered alongside a varied diet that includes nuts, seeds, fruits, and other natural foods. 

Dried corn cobs can also serve as a great enrichment option, encouraging natural gnawing and foraging behaviors rather than passive eating. Chipmunks in particular are known to collect and store (cache) shelled kernels for later use, making corn an engaging and practical food source for both species. 

3. Do Raccoons Eat Corn? Managing Corn-Seeking Behavior 

Yes, raccoons eat corn and are highly motivated foragers, often seeking it out in gardens, wildlife feeders, and even stored livestock feed. 

While it may be tempting to feed them, deliberate feeding is discouraged, as it can lead to habituation and increase the risk of human-wildlife conflict. Once raccoons associate people or homes with food, they are more likely to return frequently and become harder to manage. 

If raccoons are visiting feeders intended for other animals, consider using deterrents such as securing feed in sealed containers, bringing feeders in at night, installing motion-activated lights, or using raccoon-proof feeder designs. These simple steps can help reduce unwanted visits while still supporting other wildlife. 

4. Black Rats and Deer Mice: Rodents That Eat Corn and Why It Matters 

Both black rats and deer mice are opportunistic feeders, meaning they’ll happily eat corn from storage, gardens, and open feeders. 

And since this isn’t ideal, it’s important to be aware of it and recognize the signs if you notice corn suspiciously disappearing. To prevent this, we recommend storing corn in sealed containers and using feeders that limit ground spillage. 

This isn’t meant to scare you, as you can still happily feed an array of animals without attracting rodents by keeping feeding areas clean and secure. 

5. Can Rabbits Eat Corn Cobs? What Wild Rabbits Eat and What to Avoid 

Do wild rabbits eat corn, and can rabbits eat corn safely? 

To answer this, it helps to break it down into two groups: wild rabbits and domestic rabbits. 

For wild rabbits, it’s not uncommon for them to eat kernels and even nibble on corn plants as part of their natural foraging habits. This is one example of what animals eat corn plants in the wild. While they tend to prefer leafy greens and grasses, you can feed them corn in small portions. 

For pet rabbits, corn can be given occasionally in small amounts, but it should not make up a significant part of their diet. Corn cobs, in particular, are a choking hazard and can cause intestinal blockages, so they should be avoided entirely for domestic rabbits. 

6. Can Guinea Pigs Eat Corn? Small Companion Animals and Corn Safety 

Fresh corn kernels and small amounts of corn husk are generally safe and often enjoyed by guinea pigs. However, it should only be offered in moderation, as it is relatively high in sugar compared to their nutritional needs. 

Corn cobs are not recommended due to choking risks. Fresh corn is a better option than dried or processed corn, which is harder to digest and less suitable for guinea pigs. 

What Wild Birds Eat Corn: Species, Formats, and Feeder Tips 

Corn is one of the most widely used feeds for wild birds, especially ground-feeding species. Format matters - cracked corn to most birds, while whole kernels suits only larger species like turkeys and crows. 

Old Potters’ wild bird seed blend also includes cracked corn alongside other ingredients, making it a convenient, balanced option. 

1. Which Birds Eat Corn: From Ground Feeders to Corvids 

A variety of birds enjoy eating corn. The table below shows the types of corn they prefer and the feeders that work best for each.

2. Can You Feed Corn to Ducks? What to Know Before You Try 

Yes, corn is generally safe for ducks in moderation. Cracked corn can complement a waterfowl diet, but it shouldn’t make up the majority of what they eat. 

Like other animals, ducks can be affected by moldy corn, which may contain harmful aflatoxins. Always use high-quality, properly stored feed to keep it safe. 

Is Corn Safe for Wildlife? Key Risks and How to Feed Correctly 

Now that we know what wild animals eat corn, it’s important to understand how to offer it safely. While corn is suitable for most species when used correctly, there are a few key risks to keep in mind. 

1. Corn Form Matters: Cracked, Shelled, Whole Cob, and Dried 

As we’ve seen, different corn formats suit different types of wildlife depending on size and feeding habits. Overall, cracked corn is the most versatile option, while whole formats are better suited for larger animals or enrichment feeding. 

Here’s a quick breakdown:

2. Aflatoxin and Mold: The Risk Most People Miss 

Moldy or improperly stored corn can develop aflatoxins, toxic compounds that pose a serious risk to birds and other wildlife. This isn’t a minor concern; feed quality directly impacts animal health, so sourcing clean, high-quality corn is essential. 

Purchase only what you can use within a reasonable timeframe to prevent spoilage. Store corn in a cool, dry, well-ventilated space, and discard anything that appears discolored or has a musty odor, as these are clear signs of contamination. 

At the feeder, stay proactive. Remove uneaten corn after 2 to 3 days, or even sooner during wet or humid conditions. 

3. Habituation and Dependency: When Feeding Corn Causes Problems 

Corn can attract wildlife quickly, but it also increases the risk of habituation. Unlike more nutrient-dense options, corn is easy to overfeed, which can lead animals to rely on it instead of natural foraging. 

Deer and raccoons are particularly susceptible. Frequent feeding can alter their behavior, draw them closer to human areas, and increase conflict. 

To minimize risk, use corn as a supplement, not a primary food source. Avoid overfeeding large mammals, and be especially cautious in late winter, when feeding deer can disrupt digestion and cause harm. 

When used in moderation, corn can be part of a balanced approach, but it should never replace the natural habits of animals that eat corn. 

Conclusion 

From wild birds to larger wildlife and farm animals, corn is a versatile and effective feed for a wide range of species. 

But as we’ve covered, the form, quantity, and storage of corn make all the difference. Used correctly, it can support healthy feeding habits. 

If you’re looking for a reliable source, quality matters. Old Potters’ cracked corn and organic shelled corn kernels offer a clean, non-GMO, USA-grown foundation, whether you’re feeding ground birds, deer, or farm animals.