My hybrid dog (part wolf , part shepherd) is ll yrs old and weighs about 110 lbs. Three days ago i noticed him lethargic and shivering. i later discovered a chewed empty bag of bone meal (fertilizer for bulbs). he has not eaten since but is drinking. i have not noticed any bowel movements since then. He isnt himself, just resting and appears not well. What should i do, or give him?