Downton Abbey fans know that the butler, Mr. Carson, knows how to run the Crawley family house. And this Carson would like nothing more than to have the run of a house with a family of his own! Two to three years old and a Blue Pit Bull mix, Carson arrived as a stray at the Aiken County Animal Shelter in South Carolina on July 31st. The combination of a being a Pit Bull mix and heartworm positive did not bode well for Carson getting out of this high-kill rural shelter alive. Even worse, Carson was one of an unprecedented influx of 15 dogs in two days at this small shelter.