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.
As your litter of fluffy friends builds strength, they'll start standing and will eventually walk a few steps at a time. Usually this occurs during the third week; by the fourth week, babies Scruffy, Felix and Princess should be walking longer distances -- although they may still be a bit clumsy.