lol i had a dog that did that, while i was stood at the dog stall, i only noticed when he almost finished the bone. i was embarrissed and offered money to the stall owner to pay for what my dog took. thankfully the stall owner was nice and said no its ok. it was cause me and the stall owner was chatting.and neaver noticed my dog what he was doing.
funny thing about your film frank, noone was thinking to chase the dog, they just watched it go in the store, and come out and stuff..lol