What worked with leash training both our Saints (though they were younger than Binx at the time - 10 weeks, tops)? A quick tug on the leash, a firm, loud-enough-to-get-through-thick-skull No! and a "bad dog" when she pulled at all. They are such people-pleasers that you seeming mad is worse than any physical harm! It might take some persitence with Binx, since he is older (therefore thicker skull! ) but I'm betting you won't have to go as far as a prong collar. They aren't the pullers Huskies are, but they WILL test your patience at first!