So the funny thing is, the cats have decided to "top" him. The little girl cat he seems to have a crush on will jump on him wrap her arms around him and "bite" his neck in a domination gesture (not hurting him - they actually enjoy playing chase together). Like, "YOU are prey - cut it out!" and he willingly submits! He seems to even want this from her - sometimes nudging his head under her chest in submission. I swear it seems he likes it when she displays her dominant position. We're still keeping an eye on him - but between his crush girl cat and the former tom cat swatting him ( the boy cat does not like him at all) he might be finding his place in the pecking order. Of course, he's still only half size and will get as big or bigger than the cats...