URGENT! URGENT! URGENT! URGENT! URGENT!

Edward was originally sited by I-5 in Los Feliz, and a co-worker ended up bringing him in as she didn't want to leave him at the shelter. He did not have a tag, collar or chip. All searches for his owner have run dry. We believe he is a Boxer/Rhodesian Ridgeback mix. He is about a year old, seems very healthy, but still needs to be fixed. He is a totally sweet dog and I absolutely love him. He definitely needs an enclosed yard which we do not have here. He's totally fine when we are home, but then is likely to follow us if we both try to leave. He's very happy, smart and obedient dog, and almost never barks. He's easy to take on walks, and comes when you call. I'm sad that we can't keep him, and would love for him to find an awesome home.
Many Thanks!