Dogs can eat sunflower seeds, but only if the seeds are unsalted, shelled (without shells), and given in moderation. Sunflower seeds provide beneficial nutrients such as healthy fats, vitamin E, and magnesium, which can support a dog's skin, coat, and overall health. However, the shells pose a choking and digestive hazard and should always be removed before feeding. Additionally, salted or flavored sunflower seeds and large quantities should be avoided, as excess salt and fats can be harmful or cause weight gain and digestive issues. It is best to start with small amounts and monitor the dog for any adverse reactions.