I play tug all the time! It is my most commonly used reward for good behavior.

Juno LOVES it. And I have absolutely no rules whatsoever. I don't believe in the "winning" stuff - there are many times where Juno is just much stronger than I am and she can pull the tug right from my hands.... and then she just brings it back to me like "why'd you let go?!?" She has absolutely no concept of "winning," and it doesn't make her want to take over and start paying the bills. It's just a game. Some people are stricter about it (human always "wins", dog teeth cannot touch human hands, dog must let go immediately when asked) but I let Juno do what she wants; yeah, sometimes she accidentally nips my hand instead of the toy. Oops. We carry on, I know she's not purposely doing it. And we certainly don't have a solid enough "drop" command

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She is not in the least bit aggressive. If you want to play tug, go ahead.... figure out what rules you want in place and be consistent about them. But dogs know when it's a game. I also wrestle and rough house with Juno, where I encourage jumping, mouthing, and boxing; something else that is heavily discouraged with dominance-based thinkers... and she knows she can't just jump and attack me willy nilly. It's only when I initiate the game.
Sorry for the novel. But no, I don't believe for a second that playing tug contributes to anything negative.