They're great buddies now! Roscoe is only 2 (he's the younger dog), and Kaia is 10. She'll play with him sometimes, but tires easily. Now that he has Chester, he has a playmate just as rambunctious as he is! Although Chester did give Roscoe a boo boo on his nose the other day while playing. At least I'm secure now in knowing that Roscoe won't attack. He literally runs and hides if Chester makes the slightest aggressive move. Things are going better than I ever thought they could! Thanks for asking!