hi all, our gorgeous 9 week lab pup eve loves to play fight with lola, rescue lab cross who is 5. lola likes it too, but it seems pretty rough. they dont seem to be able to be with each other calmly yet. im worried the pup will get hurt, but however much lola puts her in her place, she comes back for more! lola growls and pushes her but looks relaxed and both dogs seem to be having fun, but i keep getting nervous and separating them, and its a bit exhausting. any thoughts ? any tips for helping them to be calmly in each others company? thanks