Look around your home. Bitter Apple spray can be applied to furniture legs, woodwork and other immovable items. Install a baby gate or keep the doors to those rooms closed. Take a walk around your yard looking for potential hazards. If your yard is fenced, check the boundaries and gates for openings that could be potential escape routes.
Puppies can get through smaller places than an adult dog.
If your yard's not fenced, make a resolution right now that your puppy will never be allowed to run off lead without close supervision. He won't ever know enough to look both ways before crossing the street to chase a squirrel. Use a schedule Work out a schedule for you and the puppy. Housetraining is much easier when the puppy's meals, exercise and playtimes are on a regular schedule throughout the day. Housebreaking is a whole subject in itself, one there isn't time for in today's short column.