Your beloved canine companion clearly isn't a cow, so you might be confused when you see them eating grass. You might even be worried. Are they hungry? Bored? Sick? Will eating grass hurt them? First, rest assured that you're not alone in your concern, especially if your dog is eating grass and vomiting. Should I Stop My Dog from Eating Grass? If So, How? If you suspect your dog is eating grass because they are bored, it might be beneficial to be sure they are getting enough exercise. Engage them in some fun activities. Try tossing a Frisbee or playing another interactive game with them, or buy them a sturdy chew toy to keep them occupied. On the chance that your dog's pica behavior is caused by a nutritional deficiency, switching to a better dog food, especially a high-fiber variety, could help alleviate the problem.