Spot and our garbage

Today my hound Spot made my mom go crazy. We went out for a brief dinner for about 25min. When we came home our garbage was all over the floor. Yogurt cups, meat packages, empty ice cream cartons, and much more all licked clean. What is even more unbelievable is he attempted to do the same thing this morning. When I tried to pull him away he growled at me. He has never had this problem in years and we later found that grease that was left in it was what caused him to misbehave like that.