No matter how well you clean your dog's teeth or what chews you give your dog, as they age most will would like a dental cleaning performed by the vet. If your gums bleed when you brush, you're either brushing too hard or you probably have an impending gum disease issue. https://mixup.wiki/index.php/Practical_Pet_Toys_-_From_Dog_And_Cat_Treats_To_Non-Edible_Playthings