Puppies start to lose their milk teeth at this stage, so don't panic if you see a trace of blood on your puppy's chew toys. Be sure and provide plenty of acceptable things to gnaw on though, and now is the perfect age to start reinforcing good "trade" and "redirection" habits, as your puppy may find your shoes more tasty than a plastic teether. It's also time to start a good dental schedule, with appropriate doggy toothbrushes and pastes (not human toothpaste).

