Baxter the Boykin Spaniel-Lab mix has spent a good portion of his life in the shelter. Just a year old, this youngster has been without a family for more than five months. His owners decided that they no longer wanted him, so they left him at the Marion County Animal Shelter in South Carolina on February 27th. Despite being left behind, Baxter’s sweet, loving personality never wavered. There was just one problem: he tested heartworm positive.