Do you ever receive the “Who’s walking whom?” question while your pup pulls you around the block? This article is extremely helpful on this topic, as it walks you through explanations of WHY dogs like to pull on leash and how to change their behavior to make walks more pleasant for everyone.
http://drsophiayin.com/blog/entry/walk-on-loose-leash-part-1-choose-the-right-walking-pace-and-make-it-clear