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.
Or, you could be teaching him to soil his crate. (If he has to go badly enough, heâll eliminate there, and you donât want that to become a habit.) So when your puppy is six months and younger, plan on at least one midday break. If you canât come home for lunch, hire a pet sitter or dog walker to help out.