But others are automatic â though not guaranteed â such as the jump from private first class to specialist. Once a private becomes a specialist, he begins prepping for leadership. This is a crucial time in his molding process because he will soon enter the ranks of the non-commissioned officer corp.
1 Puppies will stand up and start walking. 2  At the age of 3 weeks a puppy will develop its sense of smell. 3  At 3 weeks the puppy will begin to bark and show social development such as wagging its tail, growling and baring its teeth.  Up to the age of 4 weeks the mother will be with the puppy almost constantly.
Mix dog replacement milk into their dry puppy chow. You can purchase this milk from any pet supply store or your vetâs office. Soak the dry puppy food with dog replacement milk and put it in a large, shallow pan when the puppies begin to walk around at about 3 weeks of age.nce they reach about 3 weeks old, it is normal to start weaning your puppies from their motherâs milk. At this moment of transition, it is necessary to teach puppies to eat puppy food. As their caregiver, you should help facilitate this transition.