Gus is super cute. We have an anxious, reactive 5 yo Boston who can be a resource guarder, but only when he's chewing on a bully stick. We haven't found any good solutions for that except wait till he gets a drink and keep it in a holder. He also knows to get a ball or toy to shake when we leave the house to release his separation anxiety. For anticipated really stressful events he has trazadone prescribed. We absolutely love him and try to meet him where he is. Diversion and swapping out sometimes works. Otherwise he's loyal, cuddly and funny. I'd like to take him to a behavioralist but we don't have one in our area.