Are Horses Omnivores? The Truth From a Racehorse Owner

Last updated: July 17, 2026

By: Miles HenryFact Checked

I grew up around horses, including more than 30 years with various breeds at Louisiana tracks. In all that time, I’ve never seen a horse act like a true omnivore. Curious, yes — horses will nose at almost anything — but curiosity isn’t the same as a biological need for meat, and that difference matters when you’re deciding what’s actually safe to let a horse get into.

Are Horses Omnivores, Herbivores, or Carnivores?

So where do horses actually fit — are they omnivores, herbivores, or something in between? These three categories are about diet, not intelligence or personality — they mostly come down to teeth and gut design, not behavior:

Category	Diet	Examples
Herbivore	Plants only	Horses, cattle, deer
Omnivore	Plants and animal matter	Bears, pigs, humans
Carnivore	Mainly or exclusively meat	Lions, tigers, house cats

Horses fall squarely in the first category. Their teeth, digestive system, and feeding behavior are all built for pulling nutrients out of plant fiber, not a diet based on animal matter. Occasional non-plant intake doesn’t move a horse into the omnivore column any more than eating a piece of bread would make a lion a herbivore — one weird snack doesn’t rewrite an animal’s biology, and it doesn’t mean meat belongs in a horse’s regular diet.

Why Horses Are Herbivores

A horse’s teeth tell most of the story. They have 12 incisors up front for cutting grass and other forage, and 12 premolars plus 12 molars behind them for grinding it down — flat, broad surfaces built for crushing fiber, not the pointed, blade-like teeth a carnivore uses to shear meat. Most horses can grow canine teeth, but they’re small, mostly seen in males, and not needed for the horse’s actual diet.

Their digestive system is the other half of the answer. Horses are non-ruminant herbivores — unlike a cow, they don’t have a multi-chamber stomach that pre-digests fiber before it hits the intestines. Instead, they rely on hindgut fermentation: a big cecum and colon working like a fermentation vat, loaded with bacteria that break down plant cellulose after it passes through a relatively small stomach and short small intestine. That setup is great at pulling energy out of fibrous plants over hours of steady grazing, and it’s poorly suited to handling a diet of dense animal protein.

Behavior backs up the anatomy. Horses evolved as grazing prey animals, spending most of their day eating small amounts of forage almost continuously rather than hunting or scavenging for occasional large meals — the exact opposite pattern from an omnivore or carnivore. That’s also part of why horses developed such wide-set vision and communication instincts — traits of a prey animal, not a hunter.

Do Horses Ever Eat Meat?

Occasionally, yes — but rarely, and not by design. There are historical accounts of Icelandic horses reportedly eating fish along the shoreline, a habit some say developed when other forage was scarce, and it’s not unusual to see viral videos of a horse mouthing or even swallowing a chick, an insect, or scraps left in a feed bucket. None of that makes the horse an omnivore or means meat belongs in its regular diet. A herbivore that occasionally eats a bite of something else is still a herbivore, the same way a carnivore that swallows a piece of fruit is still a carnivore.

Why Would a Horse Eat Meat If It’s a Herbivore?

Horses are prey animals with a strong exploratory streak, and young horses especially like to investigate new things mouth-first, the same way a toddler or a puppy does. A horse getting into something odd is almost always curiosity, boredom, opportunity, or — in cases like those old Icelandic accounts — scarcity, not evidence that a horse’s biology has quietly changed. It’s the same reason a horse will chew on a fence rail or lick a salt block shaped like a rock: horses explore the world with their mouths, and that habit occasionally leads somewhere unexpected.

Is It Safe If a Horse Eats Meat Once?

Usually, a single accidental bite won’t cause an emergency. But there are real reasons not to shrug it off as harmless, and not to feed meat on purpose:

The practical takeaway: don’t panic if a horse steals a bite of something once, but don’t feed meat on purpose — there’s no nutritional upside for a horse, and the downside risk is real.

What Horses Should Eat Instead

A horse’s diet should be almost entirely forage — hay, pasture grass, or a combination of both — supplemented with grain only when a horse’s workload or metabolism calls for extra calories. As a rough baseline, a horse needs to eat about 2% of its body weight in hay each day, so a 1,000-pound horse needs roughly 20 pounds. Grain is a supplement to that forage, not a replacement for it, and the right amount depends heavily on the individual horse’s weight, workload, and metabolism.

I’ve written more detailed guides on the pieces that matter most here — whether a horse actually needs grain, a full equine nutrition overview, and how often to feed a horse — if you want the deeper dive on building out a feeding plan.

Conclusion

So, are horses omnivores? No. Horses are herbivores, built from teeth to gut to graze on plants, not to hunt or scavenge for meat. A horse that occasionally mouths something unusual — a chick, an insect, a dropped sandwich — isn’t behaving like an omnivore, it’s just a curious animal in an environment full of things that aren’t grass. Feed the forage-first diet a horse is actually built for, and there’s no reason to worry about the rare accidental bite of something else.

Below is a YouTube video discussing horses’ diet:

FAQ

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• What a Horse Eats: An Essential Guide
• Why Horses Can’t Vomit
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