Many people worry that if they play “tug-of-war” with their dog (or “tug”), they will be teaching their dog to be aggressive. They’re afraid that playing tug with their dog can lead to problems with dominance. Are they right to be worried? Does tug-of-war teach aggression? Actually, many recent studies have shown that dogs who enjoy “rough house” type play with their owners were generally considered better socialized than dogs who didn’t. These dogs also had less separation anxiety. This included games of tug-of-war.