Why Is My Dog Eating Stones?

What Is Pica in Dogs?

Pica is the term used when dogs eat nonfood items like stones, dirt, paper, or wood. This behavior is not normal and can be dangerous. Stones, in particular, can cause dental wear, intestinal blockages, or damage to the digestive system. The act of swallowing sharp or hard objects may lead to life-threatening complications, including internal injuries or choking.

The behavior may start as a response to stress or anxiety. For example, a dog under stress might frantically gulp down anything within reach—edible or not—just to cope. This overeating of inedible items is often linked to emotional distress, not hunger.

Stress and Anxiety as Triggers

Stress is a major cause of pica. When dogs are anxious, they may engage in compulsive behaviors like eating stones, paper, or wood. One case study describes a female livestock guardian dog that ate everything she found during walks. After training to stop taking objects from the ground, she developed excessive licking and biting around her tail—suggesting the stress was still present, just redirected.

Simply forbidding the behavior isn’t enough. The underlying cause of stress must be identified and addressed. If the dog is stressed due to environment, routine, or social triggers, the pica may continue or shift to other harmful habits.

Medical and Nutritional Causes

Some dogs eat stones due to nutritional deficiencies or malabsorption issues. Dogs with malabsorption syndrome may eat stools or other nonfood items in an attempt to gain calories or nutrients. A lack of essential nutrients could drive this compulsion, especially if the dog’s diet isn’t balanced.

While some believe dogs eat grass or dirt to get fiber or supplement their diet, evidence is weak. Grass eating may simply be due to taste or texture. However, if a dog suddenly starts eating stones or other inedible items, it could signal an underlying medical problem such as parasites, inflammatory bowel disease, or food sensitivities.

When to See a Veterinarian

If your dog eats stones regularly, it’s important to consult a vet. Persistent pica can lead to gastric obstruction, internal injuries, or life-threatening blockages. The vet may run tests to check for: - Nutrient deficiencies - Gastrointestinal disorders - Parasites or infections - Behavioral or psychological triggers

Even if the dog seems healthy, sudden changes in eating habits—especially toward nonfood items—should not be ignored. Early intervention can prevent serious complications.

How to Help Your Dog Stop Eating Stones

Addressing pica starts with understanding the root cause. If stress is involved, work on reducing anxiety through routine, safe spaces, and positive reinforcement training. Avoid punishment, as it can worsen stress and lead to more hidden behaviors.

Ensure your dog is on a balanced diet. Avoid feeding table scraps or savory treats that may encourage begging or food manipulation. If your dog eats stones during walks, keep them on a leash and redirect attention with toys or commands.

Never ignore the behavior. Even if it seems harmless at first, stones can cause irreversible damage. A vet can help determine if medical treatment or behavioral therapy is needed.