Our new puppy is settling in well, he is nearly 13 weeks old. We have started to take him out for a short walk on the lead. We live in a quiet rural village so there is minimal loud noise and he is really friendly when he meets people and other dogs. However he just does not want to walk, he is very happy and excited to go out but as we put him down he may walk and sniff for a few yards but ends up sitting or stopping. We do not want to drag him, he is very happy to walk if we have a treat in front of him for enticement but as soon as he has managed to eat it he sits or stops again or if we find a stick or toy he is happy to try to catch it to play but again when he has got it he stops. He will walk when in another dogs slipstream especially if they have said hello to each other. What are the ways of dealing with this?