Dogs can have applesauce, but only if it is plain and unsweetened. Homemade applesauce made from just cooked apples (with no added sugar, spices, or sweeteners such as xylitol) is generally safe for dogs to eat in moderation as an occasional treat. Store-bought applesauce often contains added sugars, preservatives, spices, or artificial sweeteners that can be harmful or toxic to dogs, so it should be avoided. Additionally, all apple seeds and cores must be removed before making applesauce for dogs, as these parts are toxic. Plain applesauce can provide some fiber and vitamins like A and C, but it is not necessary in a dog's diet and should only be given in small amounts to avoid digestive upset. When offering applesauce to a dog, a teaspoon or less as a treat mixed with regular dog food or frozen into treats is recommended. In summary, plain, homemade applesauce without any additives is safe for dogs in moderation; all other types are best avoided due to potential harmful ingredients.