an intelligent, loyal and eager-to-please dog can learn at any age, but the earlier you start, the sooner he will begin acting like a gentleman. puppies and senior dogs can learn these basics as soon as you bring them home. “it’s the most humane, stress-free way to teach dogs new behaviors, and pit bulls and related breeds do really well with this.” clicker training — using a clicking device or other sound that marks the desired behavior with a food …