Playtime is a crucial part of maintaining your pet's health and quality of life. Play reinforces social roles and hierarchies, exercises the brain and the body and burns off your pet's excess energy that may have otherwise been directed in more nefarious directions.
Playing with your dog is especially important, starting right off with puppies. As social animals, dogs are naturally drawn to their pack leader - you - and are often eager to engage in play or mock fighting to seek your approval and affection. For puppies especially, toys serve an additional important role in overall development. Toys that conceal treats help build the brain, and thick rubber toys help with teething and promote good chewing behavior.
Remember to consult your veterinarian with any questions relating to your pet's health or for toy recommendations.