If your dog likes apples or other fruit you may be wondering if your dog can eat apples, grapes, or oranges. And whether it's okay to give your. If you're on the lookout for new and fun ways to rev up your furry best friend's diet, adding vegetables can be a really healthy way to do that. A doggie salad may be a highly appreciated treat. Dark green vegetables are highly nutritious to both humans and dogs. skin attached and seeds removed as a healthy treat; or even some tomato if your pooch will eat it. Apple seeds, apricot pits, cherry pits and peach pits are all toxic to dogs, although the fruit is OK.