I have a nearly 5 month GS pup that likes to antagonize my 9 yr old springer on walks. If we are on leash, I give 'heel' command, click, then treat. That keeps her focus on me not springer. If we are off leash (we have trails behind house) she has a ball in her mouth (high ball drive) or chasing ball down trail. I give commands through out ball chase so it's a reward for staying on task. But I notice if she has a ball in her mouth she can't use my springer's long ears as a tug toy. :-) hope that helps.