Upset stomachs are ruff, and a lot of dogs have sensitive tummies. Sometimes dogs get excited and eat too quickly, or need to adjust more slowly to their new food. Make sure to follow our feeding guidelines. Food allergies, or an inability to break down certain nutrients can also be the culprits. If stomach upset occurs as a result of feeding Jinx dog kibble, the new diet may be causing a disruption to their digestive system. This is a rare occurrence. Introduce the new food gradually, increasing the amount of new food over a two-week period to allow their digestive system to adapt. If Jinx doesn’t agree with them, please reach out to us at support@thinkjinx.com