Why Does My Dog Eat Poop? Causes & How to Stop It

Few dog behaviors are as universally revolting to pet owners as watching their beloved companion eat poop. Whether it's their own feces, another dog's, or even cat poop from the litter box, this stomach-turning habit leaves most owners asking the same question: Why?

The good news is that coprophagia - the technical term for poop eating - is far more common than you might think, and in most cases it's a solvable problem. A landmark study by Dr. Benjamin Hart at the University of California, Davis, found that approximately 16% of dogs are "serious" poop eaters (caught in the act five or more times), and up to 23% of dogs have been observed eating feces at least once. So if your dog does this, you are very much not alone.

What Is Coprophagia?

Coprophagia comes from the Greek words "copros" (feces) and "phagein" (to eat). In the veterinary world, it refers to the ingestion of feces and is classified into three types:

• Autocoprophagia: Eating one's own feces
• Intraspecific coprophagia: Eating feces from another member of the same species (another dog)
• Interspecific coprophagia: Eating feces from a different species (cat poop, rabbit droppings, horse manure, etc.)

Each type can have different underlying causes, and the treatment approach may vary accordingly. For instance, a dog eating cat poop is often motivated by the high protein content of cat food, while a dog eating their own feces may have a digestive issue preventing proper nutrient absorption.

Why Puppies Eat Poop (And Why It's Normal)

If you have a puppy who eats poop, take a deep breath - this is actually developmentally normal behavior. There are several reasons puppies are especially prone to coprophagia:

Learned from their mother: Mother dogs instinctively eat their puppies' feces during the first few weeks of life to keep the den clean and hide the scent from potential predators. Puppies observe this behavior and may imitate it. This is one of the most common origins of coprophagia in young dogs.

Oral exploration: Puppies explore their world primarily through their mouths. Just as a human toddler puts everything in their mouth, puppies taste, chew, and swallow a remarkable variety of substances as they learn about their environment. Feces is simply one of many things they investigate.

Developing digestive system: Puppies' digestive systems are still maturing, and they may not fully absorb all the nutrients from their food. This can leave their feces smelling more like food than waste, making it more appealing to eat. As their digestive system matures and they transition to adult food, this factor typically resolves on its own.

Most puppies naturally outgrow coprophagia by 9 to 12 months of age. If your puppy is eating poop, focus on consistent cleanup and supervision rather than punishment, and consult your vet if the behavior persists beyond their first birthday.

Behavioral Causes of Poop Eating

Attention-Seeking

Dogs are social creatures who crave interaction with their owners, and they quickly learn which behaviors produce the strongest reactions. If eating poop causes you to rush over, shout, chase them, or engage in any animated way, your dog may learn that poop eating is a reliable method for getting your attention - even if that attention is negative. For some under-stimulated dogs, any attention is better than no attention.

Boredom and Understimulation

Dogs left alone for long periods, confined to small spaces, or lacking adequate physical and mental stimulation may turn to coprophagia out of sheer boredom. Eating feces becomes an activity that breaks the monotony. This is particularly common in dogs who are left in yards or kennels for extended periods without enrichment. Dogs who engage in other boredom-related behaviors like excessive licking may also be at higher risk.

Stress and Anxiety

Stressful living conditions can trigger coprophagia. Dogs in shelters, puppy mills, or overcrowded multi-dog households have significantly higher rates of poop eating. Stress from major life changes - a move, a new baby, loss of a companion animal, or changes in routine - can also prompt the behavior as a coping mechanism. The act of eating, including eating feces, can be self-soothing for anxious dogs due to the endorphin release associated with chewing and consuming food.

Learned Behavior and Scent Association

Beyond learning from their mother, some dogs develop coprophagia through environmental conditioning. Dogs fed near their elimination area (common in puppy mills and some kennel situations) may develop an association between the smell of feces and food. Similarly, dogs who have been harshly punished for house-training accidents may eat their own feces to "hide the evidence" and avoid punishment, creating an unfortunate cycle.

Competition and Resource Guarding

In multi-dog households, some dogs eat poop as a form of resource competition or to assert themselves. If dogs are fed together and one eats faster, the slower eater may compensate by consuming feces. Some dogs eat the feces of other dogs in the household as a dominance-related behavior or simply because they view anything in their environment as a potential resource.

Maintaining good hygiene through regular grooming is part of overall canine health

Medical Causes of Coprophagia

When an adult dog suddenly starts eating poop, a medical cause should always be considered. Several health conditions can make feces more appealing or create a nutritional drive to consume it:

Certain medications can also increase appetite and contribute to coprophagia, particularly corticosteroids (prednisone), some anti-seizure medications, and drugs that affect thyroid function. If your dog started eating poop after beginning a new medication, mention this to your veterinarian.

It's also worth noting that dogs on poor-quality diets with excessive fillers may produce stools that still contain significant undigested nutrients, making them more appealing to eat. Switching to a high-quality, highly digestible dog food can sometimes resolve the issue entirely.

Health Risks of Eating Poop

While coprophagia is disgusting to humans, the health risks to your dog depend largely on whose poop they're eating:

For these reasons, even if you're not bothered by the behavior itself, it's worth taking steps to reduce your dog's poop-eating habit, particularly if they're consuming feces from unknown animals during walks or at dog parks.

How to Stop Your Dog from Eating Poop

Breaking the coprophagia habit requires a multi-pronged approach. Here are the most effective strategies, roughly in order of priority:

1. Clean Up Immediately

The single most effective strategy is also the simplest: remove the temptation. Pick up your dog's poop immediately after they go, before they have a chance to eat it. In multi-dog households, clean up after every dog promptly. For cat owners, clean the litter box multiple times daily and consider placing it in a location your dog cannot access - behind a baby gate, in a room with a cat-sized opening, or elevated on a platform.

2. Improve Their Diet

Switch to a high-quality, highly digestible dog food appropriate for your dog's age and size. Look for foods where a named animal protein is the first ingredient and that avoid excessive fillers like corn, wheat, and soy. A better diet means more complete nutrient absorption, which means less appealing stools. Consult your veterinarian for specific food recommendations based on your dog's needs.

3. Add Digestive Supplements

Digestive enzyme supplements can improve your dog's ability to break down and absorb nutrients from their food. Probiotics support healthy gut flora and digestion. Some veterinarians recommend adding a small amount of pineapple, pumpkin, or papaya to food, as these contain natural enzymes that may make feces less palatable after digestion. Commercial coprophagia deterrent products are also available, though results vary.

4. Teach a Solid "Leave It" Command

Training a reliable "leave it" command is one of the most valuable investments you can make for a poop-eating dog. Start indoors with low-value items, gradually increase the difficulty, and heavily reward compliance. When your dog approaches feces on a walk, a well-trained "leave it" gives you the ability to redirect them before they eat it. Pair this with offering a high-value treat as a reward for walking away from poop. Dogs who are attentive and focused on their owners tend to respond better to this training.

5. Increase Exercise and Mental Stimulation

A tired dog is a well-behaved dog. Ensure your dog gets adequate daily exercise through walks, runs, fetch, or swimming. Equally important is mental enrichment: puzzle toys, snuffle mats, training sessions, and interactive games all help burn mental energy that might otherwise be directed toward undesirable behaviors like coprophagia. For high-energy breeds, consider activities like agility, nose work, or herding trials.

6. Supervise Outdoor Time

Until the habit is broken, supervise your dog during all outdoor time. Keep them on a leash during walks so you can redirect them away from feces. In your yard, accompany them during bathroom breaks and clean up immediately. Avoid leaving your dog unsupervised in areas where other animals defecate, such as unfenced yards or common areas.

7. Don't Punish - Redirect

Punishing your dog for eating poop is counterproductive. It can increase anxiety (which may worsen the behavior), damage your relationship, and teach your dog to eat poop when you're not looking. Instead, use positive redirection: call your dog away from feces, reward them for coming to you, and offer a better alternative. Consistency and patience are key. Regular grooming appointments can also help maintain overall hygiene for dogs with this habit.

When to See the Vet

While occasional poop eating in an otherwise healthy dog may not require immediate veterinary attention, certain situations call for professional evaluation:

Your veterinarian can perform a thorough physical examination, check for parasites with a fecal test, run bloodwork to evaluate organ function and nutritional status, and rule out conditions like EPI, thyroid disorders, diabetes, and malabsorption syndromes. Once medical causes are ruled out or treated, behavioral interventions become much more effective.

The Bottom Line

Coprophagia is a common, usually manageable dog behavior with identifiable causes and effective solutions. While it's understandably gross to watch your dog eat poop, remember that from your dog's perspective, there is almost always a logical reason for the behavior, whether it's a nutritional need, a behavioral pattern, or a medical condition signaling that something is off.

The most successful approach combines management (cleaning up immediately), nutrition (a high-quality diet with appropriate supplements), training (a reliable "leave it" command), enrichment (adequate exercise and mental stimulation), and veterinary guidance (ruling out and treating medical causes). With patience and consistency, the vast majority of poop-eating dogs can be redirected to more socially acceptable habits.

If your dog's coprophagia is persistent, worsening, or accompanied by other concerning symptoms, don't hesitate to consult your veterinarian. A simple blood panel and fecal examination can often identify treatable underlying conditions that resolve the behavior entirely.

Frequently Asked Questions