He's 10 years old and never once has he shown any interest in the garbage can but something got his attention yesterday. Not sure what all was in the trash or what all be ate. Vomited once last night, HUGE! and he was gassy all night but no diarrhea, poop was normal last night, this morning was really hard. Have withheld food since and he's drinking water and acts totally normal. Should I feed his regular food (Blue Buffalo) or should I give rice and progress to boiled chicken?