Alf often doesnt do what he is told (but generally he is quite placid, gets a little excited sometimes but not overbearing) so I need to know what I can easily teach him at home before DH gets home to be able to take him to puppy preschool. I have a big packet of schmacko's here, and have been trying to teach him sit and stay, but he also pulls on the leash and everytime he sees another dog he wants to get to it (he is very much a 1 dog family type of dog) He tried to take on another dog at the vets the other week. So what can I teach him with little physical exertion, and how?