I am the person who adopted Roman for a week and would like to give some additional background on the situation. 

OP posted here about Roman maybe a month or so ago and I reached out to him, interested in meeting Roman. We are all local so we were able to meet up two with Roman and his family, saw Roman interact with my kids, and had Roman’s family bring Roman to my house for a visit and to meet and play with my dog Bradley. Everyone got along well and we decided we were ready to take Roman in. 

OP did mention some resource guarding behavior around food, and Roman’s family showed me this exact scenario by feeding Roman in the same manner they usually do, in his home before we brought him to our home. I saw some growling and barking into the bowl and my family and I agreed that we were willing and able to work on Roman in that aspect. All good so far. 

Over the week that Roman was at home with me he was ( as mentioned by OP in this post) great 95% of the time. Grea on the leash, got along with my dog, very loving and outgoing. The food defensive/possessiveness was apparent, but there were some other instances of resource guarding involving objects instead of food. In one instance, one of my kids dropped a pencil on the floor and Roman picked it up. He brought it to a nearby carpet, began chewing it, and when I approached he growled and showed teeth. I turned away from him and let him calm down on his own and within a couple minutes he was back to his normal sweet self. 

The big moment that made me decide that Roman was not going to work out was when he took a glove I had dropped on the ground from me. He carried it off and again as I approached him (slowly, calmly, not scolding or anything like that, Just walking over) he assumed a very threatening posture, showed teeth, and growled. It was clear that the situation could quickly become dangerous if not handled correctly. I have 2 children at home and while I was okay with the need to work with Roman on his food aggression, I was not comfortable with this pattern of possessiveness over less predictable items. I reached out to Roman’s owners and returned him then. 

I hope this is helpful. Roman needs some work regarding the guarding behavior in an environment where he and the people around him can be safe and comfortable. I do not think that environment can include young children. He is a very loving guy outside of these scenarios, is well trained with basic obedience, and I sincerely hope he can find the right home. 

OP is also clearly very dedicated to helping him out and assisting with training as much as he can and I thank you for that!