Indeed, many fruits are perfectly safe for dogs and can be offered as treats in moderation. Some great alternatives to grapes for dog treats include raw apples, bananas, and berries. Treats should make up no more than 10% of a dog's daily calorie intake, and fruits are unnecessary for good canine nutrition.Indeed, many fruits are perfectly safe for dogs and can be offered as treats in moderation. Some great alternatives to grapes for dog treats include raw apples, bananas, and berries. Treats should make up no more than 10% of a dog's daily calorie intake, and fruits are unnecessary for good canine nutrition.