For a dog, toys are just as important an item of equipment as a leash or collar. For a dog, the mouth is the What are the hands of a person? He does everything with his mouth, eats, chews, learns, calms down, etc.
That's why it's important to have toys for your dog, and plenty of them, and to change them regularly. Otherwise, over time or due to stress, your dog may start chewing on things you don't want him to chew.
