Plain popcorn is a safe, low-calorie snack for dogs. Popcorn flavored with salt and butter, while not unsafe, is a less healthy choice for dogs.
Pretzels are another snack that is fine for dogs to eat. However, as with popcorn, it is best to offer dogs an unsalted or low-sodium variety.
Other human foods that are safe and healthy for dogs include apples, peas, green beans, carrots, sweet potatoes, zucchini, summer squash, winter squash, lettuce and blueberries. Peanut butter, another popular dog treat, is also a safe option, but it’s healthiest to choose natural varieties that do not have added salt, sugar or preservatives. Because it is high in fat and calories, peanut butter is best for dogs in moderation.