In many cases, it is completely harmless. However, frequent grass eating combined with vomiting, diarrhea, or unusual behavior may sometimes signal digestive discomfort or other health concerns. Understanding why dogs eat grass can help owners know when the behavior is normal and when it may require closer attention.
This combination can be a sign of something minor or an indication of a more serious underlying condition. We outline the reasons behind your dog eating grass and diarrhea, when you should be concerned, and what steps to take next.

If your dog is eating grass and has symptoms such as lack of appetite, decreased energy, diarrhea, or constipation, its time to see a veterinarian. Its important not to switch foods while the diarrhea is happening, as it may worsen the condition.

Some dogs eat grass daily, especially dogs that spend a lot of time outdoors. Daily grass grazing is generally considered normal if your dog appears healthy, is eating their regular food, has normal stools, and is not showing signs of digestive distress.
Common Causes Of Dog Diarrhea. Eating Something They Shouldnt. The most common cause is dietary indiscretion. In everyday life, that usually means your pup ate table scraps, garbage, spoiled food, grass, a fatty snack, or something found on a walk.