Horse Pica: Eating Dirt, Wood, Bedding or Manure

Pica is a broad term for eating non-food items. In horses, that may mean dirt or sand, wood, bedding, or manure. One of the most common reasons is not enough forage time. Horses are built to graze for many hours each day. When they get less roughage, spend long stretches stalled, or finish concentrated feeds quickly, they may start chewing wood or seeking other materials to eat.

Management factors matter too. Horses fed hay directly on sandy ground can accidentally take in dirt and sand. Group feeding pressure can also push a horse to eat from contaminated ground or pick through bedding. Boredom, limited turnout, low exercise, and low social contact can all contribute to abnormal eating behaviors.

Your vet may also look for dietary imbalance or underlying medical issues. Merck notes that horses may consume soil when seeking a nutrient that is low in the diet, and pica can be seen with some nutritional deficiencies. Adult manure eating can also be linked with low roughage or dietary deficiency. Dental pain, poor chewing, weight loss, parasite burden, and some digestive disorders can make normal feeding less effective and may drive unusual eating habits.

Not every case has one single cause. Some horses have a mix of forage shortage, stress, feeding setup, and medical factors. That is why a full history and exam are often more useful than trying one change at random.

A one-time nibble of bedding or brief curiosity around manure is not always an emergency. You can usually monitor short-term if your horse is bright, eating normal hay, drinking, passing manure normally, and showing no signs of pain. Even then, it is smart to correct obvious setup issues right away, like feeding hay off sandy ground or leaving a horse with too little forage between meals.

Call your vet within a day or two if the behavior is repeated, escalating, or becoming a habit. That is especially true for adult horses eating manure, horses stripping fences or stall boards, or horses regularly consuming dirt or sand. Ongoing pica can point to a ration problem, stress, ulcers or other digestive trouble, dental disease, or another medical issue that needs attention.

See your vet immediately if pica is paired with colic signs such as pawing, flank watching, rolling, repeated lying down and getting up, reduced manure output, straining, abdominal distension, or refusing feed. Urgent care is also needed if your horse seems depressed, is choking, has feed material coming from the nose, cannot chew normally, or may have eaten treated wood, toxic bedding, fertilizer-contaminated soil, or large amounts of sand.

In foals, some manure eating can be normal during the first weeks of life. But persistent coprophagia, poor growth, diarrhea, dullness, or nursing problems should still be discussed with your vet.

Your vet will start with a history and physical exam. Expect questions about forage amount, feeding schedule, concentrate use, turnout time, bedding type, access to pasture, deworming history, manure quality, weight changes, and whether the horse is eating dirt intentionally or mainly while eating off the ground. They will also want to know if the behavior is new, seasonal, or linked to stall time.

The exam may include an oral exam to look for dental pain or poor chewing, body condition scoring, abdominal auscultation, and evaluation for colic or sand accumulation risk. Depending on the case, your vet may recommend fecal testing, bloodwork, and sometimes additional diagnostics if there are signs of ulcers, chronic disease, weight loss, or mineral imbalance.

If sand ingestion is suspected, your vet may discuss fecal sand checks, management changes, and in some cases treatment aimed at moving sand through the gut. If wood chewing is prominent, they may focus on roughage intake, feeding duration, exercise, and environmental enrichment. If manure eating is the issue, they may review forage access, nutrition balance, and whether the horse could be copying herd behavior or compensating for management stress.

Treatment is based on the cause your vet suspects. That may include ration changes, more forage, feeder changes, more turnout, parasite control, dental care, ulcer evaluation, or closer monitoring for colic complications. The goal is not only to stop the behavior, but to reduce the risk of intestinal problems and improve overall welfare.

Home care starts with safer feeding and more forage time. Offer hay in a feeder, tub, rack, or on a clean mat rather than directly on dirt or sand. Review whether your horse is going too long between forage meals. Many horses do better when hay access lasts longer through the day and night, rather than being finished quickly.

Increase turnout, movement, and mental stimulation when possible. Horses are designed to spend much of the day grazing and moving. More pasture time, hand-walking if appropriate, compatible social contact, and stall enrichment may reduce boredom-related wood chewing or bedding consumption. If wood chewing is a problem, remove access where you safely can, but focus on the reason for the behavior rather than only blocking it.

Keep the environment clean. Pick manure from stalls, paddocks, and dry lots regularly. That lowers access to feces and also reduces parasite exposure. Watch manure output, appetite, water intake, and attitude closely for the next several days. If your horse starts acting painful, stops passing manure, or seems less interested in feed, contact your vet right away.

Do not start supplements, ulcer medications, or mineral products on your own unless your vet recommends them. The best home plan depends on whether the main issue is forage shortage, stress, dental trouble, parasites, digestive disease, or another medical problem.