Why Do Dogs Eat Poop? Causes and How to Stop Coprophagia

Quick Answer

Few dog behaviors provoke as much horror in owners as catching their beloved pet eating feces. Whether it’s their own, another dog’s, or even cat poop from the litter box, coprophagia is one of the most common complaints veterinarians hear. The good news is that once you understand why it happens, it’s usually manageable.

Medical Causes: Rule These Out First

Before assuming the behavior is purely behavioral, it’s important to rule out underlying medical conditions. Several health issues can drive coprophagia:

Nutritional Deficiency

Dogs on poor-quality diets or those with malabsorption disorders may eat feces to recapture nutrients their bodies failed to absorb the first time around. This is especially common with:

• Enzyme deficiency: The pancreas may not produce enough digestive enzymes, leaving food partially undigested. The stool still smells and tastes like food to the dog.
• Vitamin B deficiency: Some research links coprophagia to low vitamin B levels, though the evidence is still evolving.
• Poor-quality food: Diets heavy in fillers and low in bioavailable nutrients can leave dogs nutritionally unsatisfied even when eating adequate calories.

Intestinal Parasites

Worm infestations and other parasites can steal nutrients from your dog’s digestive tract, creating a cycle of deficiency that drives poop eating. Regular deworming and fecal testing help rule this out.

Medications and Conditions

Certain medications (especially steroids like prednisone) dramatically increase appetite and can trigger coprophagia. Conditions like Cushing’s disease, diabetes, and thyroid disorders that affect hunger regulation may also contribute.

Behavioral Causes: The More Common Culprits

In the majority of cases, coprophagia has behavioral roots rather than medical ones. Understanding the psychology helps you address it effectively.

Maternal Instinct

Mother dogs instinctively eat their puppies’ feces for the first few weeks of life. This keeps the den clean and eliminates scent that could attract predators. It’s entirely normal and typically stops once puppies begin eating solid food. Some puppies observe this behavior and imitate it.

Attention Seeking

Dogs are remarkably good at figuring out what gets a reaction. If eating poop consistently triggers a dramatic response from their owner (yelling, chasing, frantically pulling them away), some dogs learn to repeat the behavior specifically because it guarantees attention, even negative attention.

Boredom and Understimulation

Dogs left alone in yards or kennels for extended periods may eat feces simply because there’s nothing else to do. Coprophagia is significantly more common in dogs that lack adequate mental stimulation and exercise. A tired, mentally engaged dog is far less likely to find poop interesting.

Stress and Anxiety

Anxious dogs, particularly those with separation anxiety or those in high-stress environments (shelters, multi-dog households with conflict), sometimes develop coprophagia as a coping mechanism. The behavior can become compulsive if the underlying anxiety isn’t addressed.

Learned From Other Dogs

In multi-dog households, if one dog eats feces, others may pick up the habit through observation. Dogs are social learners, and behaviors, both good and bad, can spread through a group.

The Cat Litter Box Problem

Cat feces is irresistible to many dogs because cat food is protein-dense, and a significant amount of that protein passes through relatively undigested. To a dog’s nose, cat poop smells like a high-value treat. This is normal canine behavior, not a sign of deficiency.

How to Stop Your Dog From Eating Poop

The most effective approach combines management (preventing access) with addressing the root cause:

1. Clean Up Immediately

The simplest and most effective strategy is removing the opportunity. Pick up your yard daily, or better yet, clean up immediately after your dog goes. On walks, always carry bags and pick up right away.

2. Improve Their Diet

Switch to a high-quality, easily digestible food if you haven’t already. Look for foods with named meat proteins as the first ingredient and minimal fillers. Some veterinarians recommend adding digestive enzyme supplements to help with nutrient absorption.

3. Increase Exercise and Mental Stimulation

A bored dog is a poop-eating dog. Increase daily walks, add interactive puzzle toys, practice training sessions, and ensure your dog has enough mental and physical engagement throughout the day.

4. Train the “Leave It” Command

A reliable “leave it” command is your best behavioral tool against coprophagia. Train this using high-value treats in controlled settings, then gradually apply it to real-world situations. The key is that your reward must be more appealing than what you’re asking them to leave.

5. Make Feces Unappealing

Commercial coprophagia deterrent products (tablets or powders added to food) contain ingredients like yucca extract and enzymes that make stool taste bitter. Results are mixed: they work well for some dogs and not at all for others. They’re worth trying as part of a broader strategy but shouldn’t be your only approach.

6. Block Access to Cat Litter

If your dog raids the cat’s litter box, the solution is management, not training. Place the litter box behind a baby gate the cat can jump over, use a top-entry litter box, or put it in a room accessible only through a cat-sized opening.

What NOT to Do

Is Poop Eating Dangerous?

In most cases, a dog eating their own feces is more disgusting than dangerous. However, there are real risks:

• Parasite transmission: Eating feces from other dogs or wildlife can transmit intestinal parasites including roundworms, hookworms, whipworms, and giardia
• Bacterial infection: Feces may contain harmful bacteria like Salmonella, E. coli, and Campylobacter
• Re-infection: Dogs being treated for parasites can re-infect themselves by eating their own contaminated stool
• Toxin exposure: Feces from animals that have been dewormed or medicated may contain drug residues

Keep your dog’s parasite prevention up to date and schedule regular fecal exams with your veterinarian, especially if coprophagia is an ongoing issue.

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