Our golden boy"Kopi" is almost 6 months old. He won't leave our 8 year old cocker alone. I know Kopi just wants to play, but we can't risk "Ziggy" getting hurt. He's had a torn ACL and surgery to have it repaired. "Ziggy" really doesn't want much to do with Kopi and he won't put Kopi in his place, either. Both boys love their long walks with Dad. Does anybody have any suggestions?