Dogs that beg, jump on their handlers, steal, get up on counters, or in any way display bad behavior in connection with food should be put on a program of regular obedience training (with emphasis on the down-stay), a strict schedule that limits their freedom (e.g., alternating between periods with the owner, in the crate, in an outdoor pen, and back with the owner again), and set-up situations that allow the dog to "win" by earning warm praise and perhaps a treat.
