Treating coprophagia (stool eating) in dogs starts with ruling out medical causes, then combines environmental management, training, and sometimes dietary changes. About 16% of dogs are frequent stool eaters, and while the habit is revolting to owners, it’s surprisingly common and rarely a sign of a serious psychological problem.
Rule Out Medical Problems First
Before assuming your dog’s stool eating is purely behavioral, a vet visit is worth the time. Any condition that reduces nutrient absorption, increases appetite, or leaves excess food in the stool can drive a dog to eat feces. The most common medical culprits include digestive enzyme deficiencies (where the pancreas doesn’t produce enough enzymes to break food down properly), intestinal parasites, diabetes, Cushing’s disease, and thyroid disorders. Dogs on certain medications, particularly steroids, can also develop an unusually strong appetite that extends to stool.
A fecal parasite test is the minimum your vet should run. If parasites come back negative and the behavior persists, bloodwork can check for metabolic conditions like diabetes or thyroid imbalances. One detail owners often miss: if your dog only eats another specific dog’s stool, that other dog may have a digestive issue leaving undigested nutrients behind, making their feces more appealing. Both dogs may need testing.
What Actually Drives the Behavior
Once medical causes are cleared, you’re dealing with a behavioral issue. But it may not be the one you’d expect. A large study led by researcher Benjamin Hart found that coprophagia has no connection to separation anxiety, aggression, destructive behavior, compulsive disorders, or difficulty with house training. Compulsive behaviors were reported at nearly identical rates in stool eaters (3.5%) and non-eaters (2.9%). There was also no difference based on sex, age, or neuter status.
The strongest finding was that coprophagic dogs were more likely to be described as “greedy eaters,” and they overwhelmingly preferred fresh stools, no more than two days old. This points to an instinctive behavior rather than a neurotic one. The leading theory is that ancestral dogs ate fresh feces near their dens to eliminate parasite eggs before they became infectious (most parasite eggs need a few days to mature). In other words, your dog may be running old survival software that no longer serves a purpose.
That said, practical factors can make things worse. A poorly digestible diet, underfeeding, or boredom can all increase the likelihood. Dogs that don’t absorb enough nutrition from their food may seek it out again in their stool.
Environmental Management
The single most effective strategy is also the simplest: pick up stool immediately. If your dog never has access to feces, the habit can’t continue. In a yard, this means scooping after every bathroom trip rather than doing a weekly cleanup. On walks, keep your dog on a leash in areas where other dogs have defecated and guide them past any stool on the ground.
For multi-dog households, supervise bathroom breaks so you can clean up before another dog gets to the pile. If you can’t supervise constantly, a basket muzzle can prevent access during unsupervised outdoor time. Basket muzzles allow dogs to pant, drink, and breathe normally while blocking their ability to pick things up off the ground.
Training “Leave It” and Redirect
The two most useful commands are “leave it” and a reliable recall (“come”). The American Kennel Club recommends a specific routine: teach your dog to come to you immediately after they’ve finished pooping. When they turn toward you instead of the stool, reward them with a high-value treat. Over time, this builds a habit where your dog’s first instinct after defecating is to check in with you for something delicious rather than turning around to inspect what they just produced.
Start practicing “leave it” with low-stakes objects indoors before trying it around stool. The command needs to be reliable in easy situations before you can expect it to work against something your dog finds genuinely appealing. Punishment, including yelling or pulling your dog away from stool, tends to backfire. Some dogs learn to eat stool faster or more sneakily to avoid getting caught, and the added stress can make the behavior worse.
Dietary Adjustments
If your dog is on a low-quality food, switching to a more digestible diet can help. When a dog absorbs more nutrients from their food, less undigested material ends up in the stool, making it less appealing. Look for foods with named protein sources and avoid fillers that pass through largely undigested.
While experimentally induced thiamine (vitamin B1) deficiency has been linked to coprophagia in research settings, dogs eating a standard commercial diet are unlikely to be deficient. Adding a general digestive enzyme supplement is unlikely to hurt, but the evidence that it resolves the behavior on its own is thin. The more important dietary question is whether your dog is getting enough food overall. An underfed dog with a strong appetite is more likely to scavenge from any available source.
Commercial Deterrent Supplements
Coprophagia deterrent products are chewable supplements you give to the dog whose stool is being eaten. They work by making the resulting feces taste or smell unappealing. Typical active ingredients include yucca extract (to reduce stool odor), cayenne pepper (to create a bitter or spicy taste), digestive enzymes like alpha amylase (to improve nutrient absorption so less remains in the stool), and parsley leaf. Some also include glutamic acid and chamomile.
These products work for some dogs and not others. The main limitation is logistical: if your dog eats other dogs’ stool at a park or on walks, you can only treat your own dog’s output. They’re most useful in multi-dog households where you can give the supplement to the dog whose feces is being targeted. Give them a trial of a few weeks before deciding whether they’re helping.
Some owners try home remedies like adding pineapple, pumpkin, or meat tenderizer to food, based on the idea that these make stool taste worse. Results are inconsistent, and there’s limited clinical evidence supporting any of them.
Why Some Dogs Are Harder to Stop
Because coprophagia appears rooted in an ancestral instinct rather than anxiety or compulsion, it can be stubbornly persistent. Dogs that are naturally greedy eaters and highly food-motivated often have the hardest-to-break habit. For these dogs, long-term management (consistent cleanup, leash control, and a reliable “leave it”) is more realistic than expecting a complete cure. The good news is that coprophagia is more disgusting than dangerous in most cases. The primary health risk is parasite transmission, which regular deworming and fecal testing can manage. If your dog only eats their own stool and is parasite-free, the risk is minimal, even if the behavior remains unpleasant to witness.