Merlin has been throwing up & having diarrhea for the past 2 days. We took him to the lake and had a constant watch on him, so he hasn't gotten into anything bad. But, my son fed him some canned food with some of his dog's kibble (which Merlin isn't used to). Then, yesterday, we took him over to my parents where he got some scraps of fried chicken (no bones). Could it have just been too rich for him? Is it safe to give him Pepto Bismal? His vomit is white foamy stuff. He backed up to the shower last night and had one hard stool, then diarrhea. Any ideas? (Merlin is 9 months old & around 65 lbs.)