Miko is already attached to me. I guess he associate ME with the person he was left with.  Anyway, I had to leave for 30 minutes and just got back home. My DH said that he sat at the back door going to the garage the entire time crying. Bless his heart, he definitely knows something has happened. 

 On another note, he has already figured out the other back door (leads to the yard) and he is going to it when he wants to go out. He hasn't even tried to lift his leg in the house.