Our previous Aby, Squid, would assult specific people he just didn't like. He was cute and cuddly with most everybody but there were those special few he outright hated. Squid would do a sneak bite attack on them with every intent on hurting them. We to this day don't know exactly what bothered him about these people as Mango is best of buddies with each of them. This may be the Ti & Miley issue. They may never get along.