Background [edit]. In 1985, the DoD called for an extensive review of the education and training functions. At the same time, President Reagan established the Packard Commission to review the management of the DoD.
Itâs recommended that four hours is the longest that dogs should routinely be left alone for. Every dog will be different, dependant on how old they are and what they are used to. For example, four hours would generally be too long for a very active, young puppy.
Although it's essential to consistently supervise your puppy during the house-training process, there's bound to be a time when you must leave him home alone for four hours.alk your puppy about one hour before leaving him alone. Take him outside so he can go potty and play a game of fetch so he can run and have fun. A good exercise session can help keep him calm while you're away. It might tire him out so he decides to take a nap.