Sarah Barnett / ACCT PhillyThe dog — dubbed Heart for his friendly demeanor — spent about a week at the shelter, but he struggled to swallow food.Sarah Barnett / ACCT PhillyBarnett knows Heart will bring unbridled joy to his forever home, and said potential adopters don’t need to live in Philadelphia.

Cody ran off during a walk in Hadley Wood, Barnet, with a trusted dog walker that James has used for three years. (Picture: James Firsht)Understandably, James is utterly distraught by the loss of his best friend.