Reminds me of a story from years ago from an old roommate. His dog, a Husky, disappeared after jumping the fence in the backyard. This was about 2 weeks after we moved in to a new house. He was gone for over a month so we figured we wouldn't be seeing him again even thought we searched and put up flyers everywhere (pre social media, craigslist, etc.).
One random day, we got a call from our old neighbor about 15 miles across town. He said he saw the dog sitting in front of the house we used to live in. Apparently, it took him over a month, but he finally made it back to the old house we lived in for a couple years. I guess he liked that house better.
Anyway, kudos for doing the right thing. A lot of people would not have.