One year ago (9-25-13), we drove to the county dog shelter. The shelter is a "kill" shelter.
We came home with 12 year old (best they could guess) Alias, a pitbull mix. He was badly malnourished, but very active and playful. He accepted our two dogs immediately upon arrival at home.
He never chases the barn cats, the chickens, or bothers the house cats.
He's gained weight and his bones don't stick out anymore. He's still learning to not eat the trash, but he's happy, healthy and loved. And he's an excellent "watch dog."