I ask the help of PT...

[lost_milo]

It would be best just to take him to the shelter, hun. He's a small dog and the small dogs with good temperments have excellent chances of being adopted.

I agree
You mention that he's aggressive but you also have to remember he's lost and scared. Right now it's hard for him to trust anyone and the good thing is he trust you because he knows you mean him no harm. The best thing you can do is try to find someone who can take him in just for a little while then find some rescues/shelters that are willing to take him. It's the best thing for him, you can't hide him forever. I wish I live close by I would be of more help to you.

[buttercup132]

Told you the shelter isnt a bad place. Just because Roxy didnt get adopted doesnt mean he wont, doesnt mean he doesnt have a family...And he warmed up to you I'm sure he'll warm up to other people. He's probly scared not agressive. I agree 100% with what Cyber Sibes said