Is it normal to have a puppy losing teeth? What about an old dog whose teeth An older dog smiling and showing his teeth. Share this image.
A loose tooth in a puppy is a normal part of life, but a loose tooth in an adult is often a sign of advanced gum disease.
If your dog is between 3 ½ – 7 months old, it is possible that you found a deciduous tooth that was shed during the eruption of the adult dentition.