When a dog chews on a hard object, it scrapes away the tartar that can build up and cause bad breath, staining, and periodontal disease. To satisfy the natural desire to chew. Dogs are animals, and animals use their mouths for many things. It's natural for dogs to chew, and chewing on hard chew objects provides an appropriate outlet for your dog's desire to chew. Chewing may provide some dogs with an enjoyable pastime, while others may chew to relieve boredom, frustration, or anxiety.
Puppies chew for several reasons.
Puppies like to chew on something hard to relieve the discomfort in their gums as their adult teeth come in. This is called counter pressure. Chewing also helps develop strong jaws, and trains them as youngsters on the items that are acceptable to chew. Bones Bones are good choices for dogs to chew as long as they are not too small or too brittle. Chicken bones, for example, are small and could splinter easily, getting caught in your dog's throat or digestive system.