Cooked, plain pumpkin is generally safe and beneficial for dogs in moderation. It is a good source of fiber, vitamins, and minerals, often used to aid digestion or firm up stools. Avoid pumpkin pie filling or spiced pumpkin products, as these contain added sugars and spices that can be harmful.
Disclaimer: This information is for educational purposes only. Always consult your veterinarian before making changes to your pet's diet.