A. Not if you teach your dog there are rules while playing.
Rule #1.
You always start the game. Teach the dog the name of the game. Say "tug", or whatever you want to call the game. Repeat the name several times during the game. You need to stay in control of the tug at all times. If you are not in control & your dog is...STOP this game immediately and put the toy away. Try again later. If your puppy/dog is growling while playing tug with you it is more likely than not a “play growl.”
Rule #2.
Teach the dog when the game is over. Again, choose a word such as "out" "release" "drop" "all done", etc. Your dog must learn that when you announce the release word, the game is over. The tug must be put away until time for the next game. You can play tug with your dog on a daily basis or several times a day. It's good exercise for your dog.
Tip: If you have a soft dog that lacks confidence, let your dog “win” often. It will build his confidence!