Many of the problematic behaviors we see in adult dogs develop during puppy-hood, mostly a result of a lack of proper socialisation and preventative work done early on. Though it might seem unnecessary at this early stage, committing the time and effort to training your puppy when they are younger than 16 weeks old, is time well invested that will help ensure your dog is easy to live with and well adjusted around other dogs and people. There is now concrete evidence that investing in the right kind of input and guidance in a dog during their first 6 months of life has a significant positive impact on the future livelihood of that dog.