Be sure to go with him and watch him and calmly praise him when he goes. Don’t go crazy praising him, or he is liable to stop, just calmly let him know that he is good! It doesn’t matter if it is 100 degrees or 10 below zero; raining or snowing, if you don’t go outside and monitor your puppy, you will not know if or when he is going potty outside which means he is likely to come back inside and go potty.
I know I keep mentioning this, but it is SO IMPORTANT for you to understand that in the dog potty training process, there are going to be accidents. What you do when your dog has an accident is very important. Yes I know that nobody likes cleaning up after the fact but if you react negatively your dog will start to associate your anger or frustration with him going to the bathroom and will be afraid to eliminate around you. I would say this is the biggest mistake people make while dog potty training.
Researchers have described several reasons why the dominance model is a poor choice for dog training. First, a relationship based on dominance is established to gain priority access to scarce resources, not to impose particular behaviors on the less dominant animal, so the dominance model is irrelevant for most of the behaviors that people want from their dogs, such as coming when called or walking calmly on a leash. Second dominance-submission relationships, once established, are constantly tested and must be regularly reinforced. Thus people, particularly children and the elderly, may not be able to retain their rank and are at risk of being injured if they attempt to do so. Third, dominant individuals gain priority access to resources, but only while they are present, establishing dominance over a dog does not guarantee its behavior when the dominant individual is distant or absent.
Every dog needs to learn to walk on a leash. Besides the fact that most areas have leash laws, there will be times when keeping your dog on a leash is for his own safety. Learn how to introduce your dog or puppy to the leash, then teach him how to walk properly on the leash, even beside you on a bike. A loose leash walk teaches your dog not to pull or lunge when on the leash, making the experience more enjoyable for both you and your dog.