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Why Does My Dog Eat Grass?

If you've ever caught your dog munching on the lawn, you're not alone. It's one of the most common questions pet owners ask — and the answer is usually reassuring.

Is It Normal?

Yes. Studies suggest that up to 80% of dogs eat grass at some point. Most dogs who eat grass show no signs of illness before or after. It's generally considered a normal canine behavior.

Common Reasons Dogs Eat Grass

  • Instinct — Wild canids eat plant matter as part of their natural diet. Your dog may simply be following an ancient pattern.
  • Boredom or anxiety — Dogs with excess energy or stress sometimes chew on grass the way humans fidget.
  • Stomach discomfort — Some dogs eat grass when they feel nauseous, possibly to induce vomiting. However, fewer than 25% of grass-eating dogs actually vomit afterward.
  • Nutritional gap — Rarely, dogs seek out grass for missing fiber or nutrients. If your dog eats grass frequently, consider whether their diet provides enough fiber.

When to See a Vet

Most grass eating is harmless, but watch for these signs:

  • Eating grass obsessively or in large amounts
  • Vomiting frequently after eating grass
  • Diarrhea, lethargy, or weight loss alongside grass eating
  • Eating grass treated with pesticides or fertilizers

If any of these apply, a vet visit is a good idea. Otherwise, your dog is probably just being a dog.

What Real Owners Say

On Mylo, hundreds of dog owners have shared their experiences with grass eating. The most common finding? It's almost always nothing to worry about — but switching to a higher-fiber food resolved it for many dogs whose grass eating was frequent.

Want answers matched to your pet?

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