If this were an ideal world, I can think of a vast array of things I'd like to hand out with every puppy. How to play tug would be the tip of the ice berg for me. There are sooooo many things people do wrong with dogs and a vast majority of those things are based on the huge misconception people have about dogs and dominance. So many, many dog owners and a lot of trainers alike have the show 'em who's boss mentality. It's dominate or be dominated with them. It's war against the dogs. This, by no means, applies only to a game of tug. I'd like to hand out information about socialization. (a huge problem with inexperienced dog owners, which results in unbalanced and often, dangerous dogs) I'd hand out info on how to prevent resource guarding, how to teach a dog deferential behavior (teaching a dog to say, "please.") I'd hand out info on how to stop unwanted behavior without creating more problems than the original problem. (which is so common, it's just incredible) There are a vast amount of mistakes people make with dogs which create most all behavior problems, annoying and dangerous alike, that education would help. Problems arising from a game of tug is, to me, just not a real big issue. I suspect it accounts for a relatively small percentage of potential problems with dogs. And the reason for this is that most dogs just naturally view this as a game, not opposition. Chances are good that the people you mention are not only playing the game with no common sense or rules in place, but they're also probably doing all kinds of other things wrong, which undermines the whole relationship of cooperation with their dogs. People in my area, like I said, are certainly not up to snuff on dog behavior. They do things wrong too, but I still fail to see aggression issues which I could conclude are caused by playing a game of tug.