Rice Krispie treats aren't great for humans. So, yes, the marshmallow and crisped rice dessert squares aren't exactly good for dogs. None of the ingredients in the classic recipe are harmful to canines, however. But of course, chocolate is. So if your four-legged child cleans up crumbs or sneaks a square out of the toddler's hand, he'll survive it (the toddler might not). But if you add chocolate to your treats, be sure to keep any and all crumbs away from your pup. Chocolate can be highly toxic for dogs of all breeds.