While pumpkin is sometimes recommended as a dietary supplement to help address certain digestive issues in dogs, there is limited scientific evidence to support its effectiveness in stopping coprophagia (the consumption of feces) specifically. Pumpkin is often used to add fiber to a dog's diet, which can help regulate bowel movements and firm up loose stools. The taste and smell of pumpkin may change the odor and flavor of the feces, potentially making it less appealing to some dogs. However, not all dogs find the taste or smell of pumpkin to be unappealing, and some may still engage in coprophagia despite its presence in their diet. Therefore, a comprehensive approach that addresses the underlying causes and incorporates behavior modification techniques is often necessary to address coprophagia effectively.