If your dog has a habit of eating grass with no side effects like vomiting or diarrhea, it’s likely nothing to be worried about. However, when some dogs and cats are nauseated for different reasons or feeling ill, they may have a tendency to eat grass. Make note of your pet's behavior and be aware of other abnormalities, such as vomiting or diarrhea, or not eating their regular food. Contact your veterinarian if you notice these behaviors.

It's also important to be aware that grass can contain harmful chemicals such as herbicides or pesticides.