Many people who own dogs older than 15 weeks still struggle with puppy biting. Some even place a muzzle on their dog’s mouth to combat biting, but that is extreme and rarely necessary.

Her training includes muzzling and confining Cody to a “man cave” or dog crate in her living room. Visiting her website, you see a picture of Cody, wearing a muzzle, harness, and slip lead (on ...