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.
Commands show your dog that you're in charge, help you keep your dog's behavior in line, and teach your dog how to be a well-rounded member of your pack. 1  You can start training puppies at 1 to 2 months old and even old dogs can learn new tricks.o do this, you should walk your dog with a standard, 6-foot, non-retractable leash. Hold the leash so that there's only enough room for your dog to stay by your side without being able to move in front of you. 1  As pack leader, you should always be the frontrunner in any walk.