puppy power on a leash

Terry's parents were kind enough to watch our kids while they were here so we could go see Batman (isn't it great that a town of 3600 has a theater?!!). While we were gone, they took Noah and Snap on a walk. Now, Snap doesn't like the leash. Whenever we try to get him to walk with us, he puts on all fours brakes and you have to pull him. But they figured out how to get him to walk on it - give Noah the leash and he will follow him. The dog likes his boy!