my male cat, Luciano, who is a few months older and bigger than my female, ChumChum, often licks/grooms her. she tolerates it and sometimes even purrs. often this will result in play between them...wrestling, chasing, racing up the cat tree, etc. i'm just wondering though if there is something symbolic about him licking her? especially because i've never seen her licking him. is it an alpha cat thing?