By Melissa Spangler My dog is more than a companion to me — we are a team. When I talk, he listens. When I say jump, he “barks” how high. Well, OK, he does so most of the time — except for when that pesky food aggression or his quirky desire to needlessly protect me emerge. I met, and fell in love with, Buddy — my five-year-old mix of a Beagle and Labrador Retriever — almost two years ago when I adopted him from a no-kill animal shelter in southwestern Pennsylvania near Pittsburgh. I could no...