Your young puppy is totally reliant and dependent on you to help him habituate and fit into our human, domesticated world. Your guidance and leadership will determine what path his life takes and what type of dog he will become. During puppyhood you play the lead role and are responsible for shaping the character, temperament and behavior habits that your dog will carry throughout his life. Your puppy's future is in your capable hands...
Puppies develop very quickly during their first three months, particularly after their eyes and ears open and they are no longer completely dependent on their mother. Their coordination and strength improve, they spar with their littermates, and begin to explore the world outside the nest. They play wrestling, chase, dominance, and tug-of-war games.
Bring your puppy to the crate for naps and quiet-time breaks so that he can “unwind” from family chaos. Start in increments of 10 minutes and work up to longer periods. Offer treats when he goes inside, and distraction toys, like a stuffed KONG. For years, this author has been giving her Yorkie a treat every day as soon as he goes into his crate and sits. Now as an adult dog, he runs to his crate each morning in anticipation of the goodie.
Set up his private den. He needs "a room of his own." From the earliest possible moment give your pup or dog his own, private sleeping place that's not used by anyone else in the family, or another pet. He'll benefit from short periods left alone in the comfort and safety of his den. Reward him if he remains relaxed and quiet. His den, which is often a crate, will also be a valuable tool for housetraining.
Just as a child needs a caring parent; an athletic team needs a coach; your puppy needs a leader and a clear social hierarchy. If you do not take up the role of leader, your dog will; and you will end up with an unruly, disobedient dog. Many people try to win their new puppy's love by letting the puppy always have its way. Buckets of affection is a wonderful thing for most puppies, but it must be tempered with respect.