Old Dog Eating Her Own Poop (Why It Happens)

Old Dog Eating Her Own Poop: Symptoms

If your old dog is eating her own poop, you may notice other related signs:

• Attempting to eat feces immediately after passing it
• Increased interest in feces during walks or in the yard
• Changes in appetite (increased or decreased)
• Weight loss or difficulty maintaining weight
• Digestive issues like diarrhea or soft stool
• Lethargy or reduced energy
• Confusion or unusual behavior

Old Dog Eating Her Own Poop: Common Causes

Poor Nutrient Absorption

As dogs age, their digestive systems may become less efficient at breaking down and absorbing nutrients. Even when an old dog eats a normal diet, her body may not be extracting enough proteins, fats, or vitamins.

This can leave undigested nutrients in the stool, making it smell or taste appealing to the dog.

From her perspective, eating feces may feel like a way to reclaim missing nutrition. Dogs with chronic digestive issues, pancreatic insufficiency, or long-term gut inflammation are especially prone to this behavior.

Cognitive Dysfunction (Dog Dementia)

Cognitive decline is a common but often overlooked cause of poop-eating in senior dogs. As mental awareness fades, dogs may forget learned behaviors or lose the ability to distinguish between appropriate and inappropriate actions.

An old dog with cognitive dysfunction may eat her own poop simply because she no longer recognizes it as waste. This is often accompanied by other signs such as pacing, staring, getting stuck in corners, disrupted sleep, or increased anxiety.

In these cases, coprophagia is a symptom of neurological aging rather than a behavioral problem.

Related: Old Dog Syndrome (Signs, causes and treatment)

Increased Hunger 

Certain age-related diseases can cause excessive hunger in senior dogs, even when they are eating enough food.

Conditions such as diabetes, Cushing’s disease, or thyroid imbalance can interfere with normal appetite signals.

When hunger feels constant, an old dog may seek food from any available source, including feces.

You may notice weight loss, increased thirst, frequent urination, or restlessness along with poop-eating behavior. In these situations, the behavior is driven by internal imbalance rather than habit.

Stress

Older dogs can become more anxious as their senses decline or routines change. Vision loss, hearing loss, new environments, or changes in household members can increase stress levels.

Some dogs eat their own poop as a self-soothing behavior or as a response to insecurity.

This may occur more often when the dog is left alone, after stressful events, or when the household routine changes.

In senior dogs, emotional stress can manifest in unusual behaviors that weren’t present earlier in life.

Learned Behavior 

In some cases, poop-eating begins earlier in life and continues into old age. However, aging can make the behavior more frequent due to reduced impulse control or decreased ability to unlearn habits.

If an old dog was previously punished for accidents or rushed during potty time, she may have learned to eliminate evidence by eating feces.

Over time, this behavior can become ingrained and resurface more strongly as cognitive control weakens.

Poor Diet 

Senior dogs often need diet adjustments, but if these aren’t made, nutritional gaps may develop. Diets that are low in digestible protein, fiber, or essential nutrients can contribute to coprophagia.

Irregular feeding schedules or portions that don’t meet an older dog’s energy needs can also play a role.

When a dog feels underfed or nutritionally unsatisfied, she may turn to stool as an alternative food source.

Read more: Old Dog Eating Dirt (Why it happens)

Old Dog Eating Her Own Poop: What to Do

Start by removing stool from the yard or litter area immediately after your dog eliminates, reducing access and opportunity. This simple step can significantly reduce the behavior while you investigate the cause.

Ensure your old dog is eating a balanced, senior-appropriate diet that supports digestion and nutrient absorption. Sometimes diet upgrades alone make a noticeable difference.

Maintain a consistent feeding and potty routine to reduce anxiety and confusion. Predictability is especially important for senior dogs.

Provide mental stimulation through gentle walks, puzzle feeders, and interaction to support cognitive health and reduce stress-driven behaviors.

Avoid punishment, as it can increase anxiety and reinforce the behavior rather than stop it.

When to Call or Visit Your Vet

You should contact your veterinarian if your old dog suddenly starts eating her own poop or if the behavior worsens quickly.

Veterinary evaluation is especially important if coprophagia is accompanied by weight loss, increased thirst, frequent urination, diarrhea, or behavioral changes.

If signs of confusion, disorientation, or nighttime restlessness are present, cognitive dysfunction should be assessed.

Early diagnosis of underlying medical or neurological conditions can significantly improve management and quality of life.

Old Dog Eating Her Own Poop: Treatment

Veterinary treatment for an old dog eating her own poop depends on the underlying cause. Your vet may perform blood tests, stool analysis, or other diagnostics.

Digestive issues may be treated with dietary adjustments or enzyme supplementation.

Nutritional deficiencies can be corrected with balanced diets or supplements.

Medical conditions such as diabetes or hormonal imbalances will require targeted treatment.

Behavioral strategies may also be recommended to help break the habit.

Key Takeaway

An old dog eating her own poop is rarely just a bad habit. In senior dogs, this behavior often reflects digestive inefficiency, cognitive decline, hormonal disease, or emotional stress.

While management steps at home can help reduce the behavior, identifying and addressing the underlying cause is essential.

With proper veterinary guidance and supportive care, many older dogs can regain comfort, stability, and healthier routines.