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Puppies are highly social animals and spend most of their waking hours interacting with either their mother or littermates. When puppies are socialized with humans particularly between the ages of eight and twelve weeks they develop social skills around people. Those that do not receive adequate socialization during this period may display fearful behavior around humans or other dogs as adults. The optimum period for socialisation is between eight and twelve weeks; professional animal trainers and the American Kennel Club advise puppy should be introduced to "100 People by 12 Weeks" and have encountered a wide and varied selection of people and environments.
Born after an average of 63 days of gestation puppies emerge in an amnion that is bitten off and eaten by the mother dog. Puppy begin to nurse almost immediately. If the litter exceeds six puppies particularly if one or more are obvious runts human intervention in hand-feeding the stronger puppies is necessary to ensure that the runts get proper nourishment and attention from the mother. As they reach one month of age puppies are gradually weaned and begin to eat solid food. The mother may regurgitate partially digested food for the puppies or might let them eat some of her solid food. The mother dog usually refuses to nurse at this stage though she might let them occasionally nurse for comfort.
Puppy Wallpaper spend the large majority of their time sleeping and the rest feeding. They instinctively pile together into a heap and become distressed if separated from physical contact with their littermates by even a short distance.
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