Does Eating Grass Hurt a Dog?

An occasional nibble of grass does no real harm, but letting a dog graze often is risky: lawns may carry pesticide or rat poison, grass awns can lodge in the throat or coat, and parasite eggs and bacteria on grass invite internal worms and diarrhea. If the habit persists, suspect a nutrient gap or indigestion, enrich the diet, and deworm on schedule.

Why Dogs Eat Grass

Dogs eat grass out of boredom, a nutrient gap that triggers pica, or simply to move a heavy meal through the gut. Curb it by enriching the diet, correcting the behavior with a firm 'no,' and offering probiotics so the grass does not loosen the stools — and see a vet if vomiting or severe diarrhea follows.