Why Do Dogs Eat Grass?

It’s a behavior that puzzles many pet owners: your dog walks outside and immediately starts munching on grass like it’s a salad bar. At Partners Animal Hospital Greenville, we get this question a lot—and fortunately, the answer is usually nothing to worry about.

The Theories Behind Grass-Eating

There’s no single reason dogs eat grass, but there are a few common theories:

• Dietary fiber: Dogs may instinctively seek out grass as a source of fiber to aid digestion.
• Nausea relief: Some dogs eat grass to make themselves vomit when they have an upset stomach. However, many dogs eat grass and don’t throw up.
• Boredom or habit: Dogs that are bored, anxious, or under-stimulated may chew grass for entertainment.
• Ancestral behavior: Wild canines consume plant material as part of eating whole prey—so it could be a leftover instinct.

Is It Harmful?

Occasional grass-eating is usually harmless, especially if your dog is otherwise healthy. But if your dog is eating large amounts frequently or vomiting afterward, it could signal:

• Gastrointestinal discomfort
• Nutritional imbalance
• Anxiety or stress

Grass treated with pesticides or chemicals can be toxic, so be cautious about where your dog grazes.

When to Talk to Your Vet

Let us know if your dog’s grass-eating is excessive, accompanied by other symptoms, or new and persistent. We can help rule out underlying health issues and guide you on safe outdoor habits.

And if your pup just likes the taste? We’ll help you make sure it’s not doing them any harm.
Call Us or Book an Appointment today!