Why Is My Dog Eating Cat Poop? Causes, Risks & How to Stop It

If you've ever caught your dog sneaking toward the litter box for an unwelcome snack, you're not alone. Dog eating cat poop is one of the most common—and frustrating—behaviors reported by multi-pet households. While it might seem harmless (or just gross), this habit can pose real health risks to your dog and signal underlying nutritional or behavioral issues that need addressing.

In this guide, we'll explore the science behind why dogs eat cat feces, the specific dangers involved, and actionable strategies you can implement today to stop the behavior. We'll also cover when this habit warrants a veterinary visit.

Why Dogs Eat Cat Poop: The Science Behind the Behavior

Dogs eating cat feces isn't random—it's driven by a combination of biological, nutritional, and behavioral factors. Understanding these root causes is essential for choosing the right intervention.

1. High Protein Content in Cat Food

Cat food is formulated with significantly higher protein levels than dog food—typically 30-45% protein compared to 18-25% for adult dog maintenance diets. This protein-rich diet makes cat feces more appealing to dogs from a scent and taste perspective. Your dog's nose detects undigested proteins and fats in the feces, triggering what is essentially a scavenging response.

2. Coprophagia: A Natural (But Problematic) Canine Behavior

Coprophagia—the scientific term for eating feces—is surprisingly common in dogs. According to the American Kennel Club, up to 25% of dogs exhibit this behavior at some point. While more common in puppies, many adult dogs continue the habit, especially when a convenient source like a litter box is available.

3. Nutritional Deficiencies or Malabsorption

In some cases, a dog eating cat poop may be attempting to compensate for a nutritional gap. Dogs with exocrine pancreatic insufficiency (EPI), intestinal parasites, or those on poorly balanced diets may seek out feces as a source of undigested nutrients. This is less common than behavioral causes but should be ruled out by your veterinarian.

4. Boredom, Anxiety, and Attention-Seeking

Dogs left alone for long periods or those experiencing separation anxiety may engage in coprophagia as a displacement behavior. Additionally, if you've ever reacted strongly (chasing, yelling) when catching your dog at the litter box, you may have inadvertently reinforced the behavior—your dog learned that eating cat poop gets your attention.

Health Risks of Dog Eating Cat Poop

While an occasional incident may not cause serious harm, regular consumption of cat feces carries several documented health risks:

When to Call Your Veterinarian

Contact your vet promptly if your dog shows any of these symptoms after eating cat feces:

• Vomiting or diarrhea lasting more than 24 hours
• Lethargy or unusual weakness
• Loss of appetite for more than one meal
• Visible worms in stool or vomit
• Abdominal pain or bloating
• Fever (normal canine temperature is 101-102.5°F / 38.3-39.2°C)

How to Stop Your Dog From Eating Cat Poop: 7 Proven Strategies

Breaking this habit requires a multi-pronged approach addressing both access and motivation. Here are evidence-based strategies that work:

1. Restrict Access Immediately

The most reliable short-term solution is physical separation. Options include:

• Top-entry litter boxes: Models like the Modkat or IRIS Top Entry make it difficult for dogs to access
• Baby gates with cat doors: Install gates that allow cats to pass but block dogs
• Elevated placement: Place litter boxes on surfaces your dog cannot reach (cat trees, high shelves)
• Door straps: Products like the Door Buddy allow cats to squeeze through while keeping dogs out
• Separate rooms: Use microchip-activated cat doors (SureFlap) that only open for your cat

2. Clean the Litter Box More Frequently

Scoop the litter box immediately after your cat uses it—at minimum twice daily. The less time feces sits available, the fewer opportunities your dog has. Consider an automatic self-cleaning litter box (Litter-Robot, PetSafe ScoopFree) if your schedule doesn't allow frequent manual scooping.

3. Adjust Your Dog's Diet

If nutritional deficiency is contributing to the behavior, upgrading your dog's diet may help. Look for:

• AAFCO statement confirming "complete and balanced" nutrition
• Minimum 22% protein for adult maintenance (higher for active dogs)
• Highly digestible protein sources (named meats as first ingredients)
• Added digestive enzymes or probiotics if malabsorption is suspected

Consult your veterinarian before making significant dietary changes, especially if your dog has existing health conditions.

4. Use Taste Deterrents

Several products can make cat feces unpalatable to dogs:

• Forbid (coprophagia deterrent): Added to your dog's food, makes their own feces taste bitter
• Deter tablets: Some owners add meat tenderizer (papain enzyme) or pineapple to dog food—results vary
• Direct application: Bitter Apple spray applied to feces (impractical for most households)

Note: These deterrents only work if your dog is eating their own feces or if you can treat the cat's food. They won't help if your dog is raiding the litter box when you're not watching.

5. Train the "Leave It" Command

Teaching a reliable "leave it" cue gives you a way to interrupt the behavior in real time. Use positive reinforcement training:

1. Start with low-value items on the floor. Say "leave it" and reward with a high-value treat when your dog looks away
2. Progress to higher-value items, always rewarding compliance
3. Practice near the litter box area (with cat elsewhere) using fake "bait" items
4. Gradually increase difficulty until your dog reliably leaves the litter box alone on cue

Never use punishment-based methods like shock collars or physical corrections—these increase anxiety and can worsen the behavior.

6. Increase Mental and Physical Stimulation

Boredom is a major driver of unwanted behaviors. Ensure your dog receives:

• 30-60 minutes of structured exercise daily (breed-dependent)
• Daily training sessions (5-10 minutes, 2-3x per day)
• Puzzle feeders and food-dispensing toys
• Rotate toys weekly to maintain novelty
• Scent work games and sniff walks

7. Address Underlying Anxiety

If your dog's coprophagia is anxiety-driven, consider:

• Calming supplements (L-theanine, melatonin—consult your vet for dosing)
• Pheromone diffusers (Adaptil) in areas where your dog spends time
• Desensitization and counter-conditioning for separation anxiety
• Professional behaviorist consultation for severe cases

Is Cat Poop Toxic to Dogs?

Cat feces itself is not acutely toxic in the way that chocolate or xylitol are, but it functions as a vector for disease transmission. The primary concern is Toxoplasma gondii, a protozoan parasite that cats shed in their feces. According to the CDC, approximately 60 million Americans carry Toxoplasma, and dogs can become infected through ingestion of contaminated feces.

While most healthy adult dogs fight off Toxoplasma without symptoms, puppies, senior dogs, and immunocompromised animals can develop serious illness including:

• Fever and lethargy
• Neurological symptoms (seizures, incoordination)
• Respiratory distress
• Eye inflammation and vision problems

If you suspect your dog has contracted toxoplasmosis or any other infection from eating cat feces, contact your veterinarian immediately. Diagnostic testing (fecal float, bloodwork, PCR) can confirm the diagnosis, and treatment typically involves antibiotics like clindamycin.

Prevention Checklist: Keeping Your Dog Safe

When Coprophagia Signals a Bigger Problem

While most cases of dog eating cat poop are behavioral, persistent coprophagia despite intervention may indicate an underlying medical condition. Schedule a veterinary exam if:

• The behavior started suddenly in an adult dog with no prior history
• Your dog is losing weight despite normal or increased appetite
• You notice chronic diarrhea, greasy stools, or undigested food in feces
• Your dog seems constantly hungry (polyphagia)
• The behavior is accompanied by other unusual symptoms (excessive thirst, vomiting, lethargy)

Your veterinarian may recommend diagnostic tests including:

• Complete blood count (CBC) and chemistry panel
• Fecal flotation and parasite screening
• Trypsin-like immunoreactivity (TLI) test for pancreatic function
• Vitamin B12 and folate levels to assess intestinal absorption

Frequently Asked Questions

Can my dog get worms from eating cat poop?

Yes. Roundworms, hookworms, and whipworms can all be transmitted through fecal ingestion. This is why regular parasite prevention (monthly heartworm/intestinal parasite medication) is critical for dogs in multi-pet households.

Will pineapple stop my dog from eating cat poop?

The theory is that bromelain (an enzyme in pineapple) makes feces taste unappealing. However, evidence is anecdotal, and results vary widely. Fresh pineapple in small amounts (1-2 chunks for medium dogs) is safe, but don't rely on it as your sole intervention.

Is clumping cat litter dangerous if my dog eats it?

Yes, this is a serious concern. Clumping litter (sodium bentonite) expands when ingested and can cause life-threatening intestinal blockages. If you know your dog has eaten clumping litter, contact your veterinarian or the ASPCA Animal Poison Control at (888) 426-4435 (24/7, consultation fee applies).

My dog only eats cat poop when I'm not home. What should I do?

This suggests the behavior is either attention-seeking (you react when you catch them) or boredom-driven. Focus on environmental management (restrict access completely) and increase enrichment when you're away. Consider a pet camera to monitor the behavior and identify triggers.

Can I train my cat to use a toilet instead of a litter box?

While toilet-training kits exist (Litter Kwitter, CitiKitty), success rates vary and many cats find the process stressful. For most households, physical barriers preventing dog access to the litter box are more practical and reliable.

Final Thoughts: Patience and Consistency Pay Off

Stopping a dog from eating cat poop requires patience, consistency, and a multi-faceted approach. Most dogs respond well to a combination of restricted access, dietary optimization, and positive reinforcement training. Remember that this behavior, while unpleasant, is natural from your dog's perspective—they're not being defiant, they're following their instincts.

If you've tried the strategies outlined here without success, don't hesitate to consult with a certified professional dog trainer (CPDT-KA) or veterinary behaviorist. With the right guidance, you can eliminate this habit and keep your dog healthy and safe.