DO NOT PLAY ROUGHHOUSE with your pup. It is so tempting, they look so much like little teddy bears & they can ‘take it’ and really enjoy it. The BIG PROBLEM is that your Newfie has no concept of his size or of growing larger. While it is really cute to have your puppy wrestle with you, dash around & throw body blocks at 25-30 pounds, it is no fun for the next 10 years at 150 pounds! Treat a Newfie puppy like it is a rare piece of porcelain or crystal, they really are a much more precious treasure.