Nutritional yeast, a deactivated yeast often used in vegan diets, can be safely added to your dog's food.
This yeast is a complete protein, rich in B vitamins, and provides antioxidants that can be beneficial for your dog's health.
It's important to choose nutritional yeast free of added flavors or seasonings, and start with a small amount to see how your dog reacts.
While nutritional yeast can be a healthy treat for your dog, it shouldn't be a major part of their diet.