How to Stop Dogs from Eating Dog Poop: Coprophagia...

If you've ever watched your dog enthusiastically snack on feces — their own or another animal's — you're not alone. Coprophagia (the technical term for eating feces) is one of the most common and frustrating behaviors dog owners face. A 2018 study presented at the American Veterinary Society of Animal Behavior found that roughly 25% of dogs engage in this behavior at some point, with about 16% classified as frequent stool eaters.

While it's normal to feel disgusted, understanding why your dog does this is the key to stopping it. This guide breaks down the science behind coprophagia, identifies root causes, and gives you a step-by-step, force-free training plan to eliminate the behavior — plus the veterinary conditions you should rule out first.

Why Do Dogs Eat Poop? The Science Behind Coprophagia

Coprophagia isn't a single behavior with one cause. Researchers have identified multiple triggers that fall into two categories: behavioral and medical. Before you assume your dog is just being gross, you need to know which camp they fall into.

Evolutionary and Behavioral Drivers

• Maternal instinct: Nursing mothers eat puppy feces to keep the den clean and reduce scent that attracts predators. This is completely normal and typically resolves when puppies are weaned (around 6–8 weeks).
• Scavenging instinct: Dogs are opportunistic scavengers. In the wild, canids sometimes eat the feces of herbivores to extract undigested plant nutrients. Your dog sniffing and eating rabbit droppings in the yard is following this ancient drive.
• Attention-seeking: If you've ever chased your dog yelling "NO!" after catching them in the act, you may have accidentally reinforced the behavior. Some dogs learn that poop-eating gets a big reaction from their human.
• Boredom and confinement: Dogs left alone for long periods in small spaces (kennels, crates, or small yards) may eat feces out of environmental deprivation. The ASPCA notes that under-stimulated dogs develop repetitive behaviors as coping mechanisms.
• Anxiety and stress: Dogs in high-stress environments (shelters, multi-dog households with conflict, homes with punishment-based training) show higher rates of coprophagia.
• Learned behavior from other dogs: Puppies and younger dogs often pick up the habit by watching an older dog do it. This is social learning, not a defect.

Medical Conditions That Can Cause Coprophagia

Before starting any behavioral training, rule out these medical causes with your veterinarian. Several conditions increase hunger (polyphagia) or nutrient malabsorption, driving dogs to seek calories from any available source:

A Step-by-Step Plan to Stop Your Dog from Eating Poop

Once medical causes are ruled out, here's a proven, multi-pronged approach. No single strategy works for every dog — the highest success rates come from combining environmental management, dietary adjustments, and positive reinforcement training.

Step 1: Immediate Environmental Management (Week 1)

The single most effective intervention is removing access to feces entirely. Every time your dog successfully eats poop, the habit is reinforced. Your goal in week one is zero opportunities.

• Pick up feces immediately after your dog eliminates. Use a pooper-scooper and keep bags by every exit door.
• Leash-walk your dog for all bathroom breaks — even in your own yard. This gives you physical control and lets you redirect instantly.
• Supervise multi-pet households. If you have cats, invest in a covered or top-entry litter box. Dog-proof litter boxes (like the Modkat Flip or Litter-Robot 4) physically block access. A single cat's stool can contain Toxoplasma gondii, a zoonotic parasite dangerous to humans and dogs.
• Use a basket muzzle during walks in areas where you can't control the environment (parks, trails with wildlife droppings). A Baskerville Ultra muzzle ($18–$25) allows panting and drinking but blocks ingestion. Condition your dog to the muzzle with treats over 5–7 days — never just strap it on.

Step 2: Dietary Interventions (Weeks 1–3)

Some dogs eat feces because their current diet isn't meeting their nutritional needs — or because the stool of the animal they're eating contains undigested nutrients that still smell appealing.

• Upgrade to an AAFCO-compliant, complete-and-balanced diet. Check the label for an AAFCO statement confirming the food meets nutrient profiles for your dog's life stage. Look for a named animal protein as the first ingredient and a guaranteed analysis showing minimum 22% crude protein for adult maintenance (18% minimum for senior dogs).
• Split meals into 2–3 smaller feedings rather than one large daily meal. This stabilizes blood sugar and reduces hunger-driven scavenging.
• Add fiber to your dog's meals. One to two tablespoons of plain canned pumpkin (not pie filling) per 20 lb of body weight can increase satiety. Alternatively, ask your vet about adding psyllium husk at 1 teaspoon per 20 lb.
• Consider digestive enzyme supplements like ProZyme or NaturVet Digestive Enzymes ($15–$25 for a 4 oz container). These help your dog absorb more nutrients from each meal, reducing the drive to seek extra calories.

Step 3: Taste Deterrents and Stool Additives (Weeks 2–4)

Several products make your dog's own feces taste unpleasant, discouraging consumption. These only work for dogs eating their own stool — not other animals'.

Important: No deterrent product has a 100% success rate in clinical trials. The 2018 AVSAB study found that commercial deterrents resolved coprophagia in fewer than 2% of cases when used alone. They work best as part of a broader management plan.

Step 4: Positive Reinforcement Training (Weeks 2–8)

This is where you build a lasting behavior change. The goal is to teach your dog that ignoring feces and turning to you is more rewarding than eating it.

The "Leave It" Protocol:

1. Start indoors with low-value items. Place a treat on the floor, cover it with your hand, and say "leave it." When your dog stops nosing your hand (even for a second), mark with a clicker or "yes!" and give a different, higher-value treat from your other hand. Repeat 10–15 times per session, 2 sessions per day.
2. Progress to uncovered items. Once your dog reliably leaves covered items, place a treat on the floor uncovered. Say "leave it." If they go for it, cover it calmly. Wait for them to look away, then mark and reward from your hand.
3. Add distance and real-world practice. Practice on leash in the yard with planted items (old kibble, dried treats). Gradually increase distance from you to the item.
4. Proof the behavior with feces substitutes. Use a realistic stand-in — a small piece of brown Play-Doh or a rolled-up wet food morsel shaped like stool. Practice "leave it" at increasing distances. When your dog reliably ignores it, practice on actual walks.
5. Reinforce the "come away" behavior. After your dog eliminates, immediately call them to you with a happy voice and reward with a high-value treat (freeze-dried liver, small pieces of boiled chicken — something they don't get at other times). Over 3–4 weeks, this becomes automatic: potty → come to human → get amazing treat.

Dietary Supplements and Home Remedies: What Works vs. What Doesn't

The internet is full of coprophagia "cures." Here's an evidence-based breakdown of what's worth trying and what's a waste of money — or potentially unsafe.

Special Scenarios: Puppies, Multi-Dog Homes, and Cat Litter Boxes

Puppy Coprophagia (Under 6 Months)

Puppies explore the world with their mouths, and coprophagia in puppies is extremely common — up to 30% of puppies try it. The good news: most outgrow it by 6–9 months if you manage the environment and don't accidentally reinforce it. Key puppy-specific strategies:

• Pick up feces immediately — puppy metabolism is fast and stool is still warm (and more appealing) right after elimination.
• Redirect to a toy or chew within 2 seconds of the behavior. Timing matters enormously with puppies.
• Ensure your puppy is on a high-quality puppy-formula diet meeting AAFCO growth/all-life-stages requirements — puppies have higher caloric and nutrient needs than adults.
• Never scold. Puppies don't connect punishment with the behavior after even a 3-second delay. You'll only teach them to fear you.

Multi-Dog Households

When one dog eats another dog's feces, environmental management becomes more complex:

• Feed dogs separately and supervise all bathroom breaks. If possible, walk dogs individually so you can pick up feces before the second dog gets to it.
• Feed a deterrent supplement to the dog whose stool is being eaten. Products like For-Bid work by altering the eaten dog's stool taste — so the coprophagic dog finds it unpalatable.
• Address resource-guarding dynamics. Sometimes coprophagia in multi-dog homes is related to competition — the lower-ranking dog eats feces quickly before the higher-ranking dog can access it. A certified trainer can help assess and modify household dynamics.

Cat Litter Box Raiding

Cat feces are high in protein and fat (because cat food is), making them irresistible to many dogs. This is sometimes called "coprophagia's most embarrassing form" among dog owners — and it's incredibly common.

• Physical barriers are the gold standard. Use a top-entry litter box, place the box behind a baby gate with a cat-sized gap (most cats can squeeze through a 6–7 inch gap; most dogs cannot), or use a motion-activated deterrent like the PetSafe SSSCAT spray ($35–$45) near the litter box.
• Never punish the dog for this behavior — it's driven by the same scavenging instinct that makes them eat rabbit droppings. Manage the environment instead.
• Health risk: Cat feces can transmit Toxoplasma gondii and various intestinal parasites. If your dog has been eating from the litter box, mention it at their next vet visit for a fecal test.

When Coprophagia Signals a Bigger Problem

Most coprophagia is behavioral and manageable. But certain patterns warrant immediate veterinary attention:

For suspected toxic ingestion of any kind — including consumption of unknown animal feces in public areas that may contain parasites, pesticides, or drug residues — contact the ASPCA Animal Poison Control Center at (888) 426-4435 (24/7, consultation fee applies) or the Pet Poison Helpline at (855) 764-7661.

Timeline: How Long Does It Take to Stop Coprophagia?

There's no overnight fix, but here's a realistic timeline based on combined management strategies:

Frequently Asked Questions

Is it harmful for my dog to eat their own poop?

Eating their own freshly passed stool is generally low-risk from a disease standpoint — the parasites and bacteria present are already in your dog's system. However, it can spread oral bacteria, cause bad breath, and is a sign of an underlying behavioral or medical issue that should be addressed. The real health risk comes from eating other animals' feces, which can transmit parasites (roundworms, whipworms, giardia), bacteria (salmonella, E. coli), and in the case of wild animal droppings, potentially leptospirosis.

Can I use a shock collar to stop my dog from eating poop?

No. Shock collars, prong collars, and other aversive tools are not recommended by the American Veterinary Society of Animal Behavior or the American Veterinary Medical Association. Punishment-based methods increase anxiety and can make coprophagia worse — your dog may start eating feces faster to avoid punishment, or may begin hiding the behavior. Force-free training using positive reinforcement is more effective and preserves your bond with your dog.

Will adding pineapple to my dog's food stop them from eating poop?

This is a popular home remedy with no clinical evidence to support it. The theory is that bromelain (an enzyme in pineapple) alters the taste of stool. While fresh pineapple in small amounts is safe for dogs (remove the core and skin, and limit to 1–2 small chunks per day for a medium-sized dog due to sugar content), don't rely on it as your sole strategy. Use it alongside environmental management and training if you want to try it.

My dog only eats other dogs' poop at the park. What can I do?

Off-leash environments where you can't control access to other dogs' feces are the hardest scenario. Your best options are: (1) practice a rock-solid "leave it" and recall on leash before going off-leash, (2) use a basket muzzle in high-risk areas, (3) choose walking routes and times where fewer dogs are present, and (4) carry high-value treats to redirect immediately. A long-line leash (15–30 ft) gives your dog freedom while keeping you in control.

Should I be worried if my dog eats horse or rabbit droppings?

Rabbit droppings are generally low-risk and very common — most rural and suburban dogs try them. Horse manure carries a higher risk, especially if the horse has been dewormed recently (ivermectin residue in horse manure can be toxic to dogs, particularly MDR1-gene-sensitive breeds like Collies and Australian Shepherds). If your dog eats horse manure and shows signs of lethargy, ataxia (stumbling), dilated pupils, or tremors, seek emergency veterinary care immediately.

How much will the vet visit cost to investigate coprophagia?

A basic workup including a physical exam, fecal parasite panel, and blood chemistry panel typically ranges from $150–$350 depending on your region. If advanced testing is needed (TLI for EPI, ACTH stimulation for Cushing's, full thyroid panel), total diagnostic costs can reach $400–$700. Pet insurance with illness coverage can offset 70–90% of these costs after deductible.

Final Thoughts: Consistency Is Everything

Stopping coprophagia isn't about finding one magic product or trick. It's about consistently managing your dog's environment, addressing any nutritional gaps, and building an alternative behavior through positive reinforcement. Most dogs respond well within 2–4 months of a combined approach. If you're not seeing progress after 6–8 weeks of consistent effort, consult your veterinarian or a certified veterinary behaviorist — there may be an underlying medical condition or a behavioral component that needs professional intervention.

The key takeaway: coprophagia is solvable. It takes patience, management, and the right strategy — but the vast majority of dogs can learn to leave it alone for good.