I'd always heard that you shouldn't let your dog get near chocolate because it could kill him. I nearly had a heart attack myself when I found several empty chocolate wrappers on the floor one morning - and there were no kids in the house. After a frantic call to the vet, I was assured that our dogs were probably fine because it looked like they consumed milk chocolate, which has a smaller amount of theobromine (a stimulant found in the cocoa bean) than, say, dark or semi-sweet chocolate. In addition, they ate a relatively small amount compared to their size. Still, dogs should be kept away from this sweet stuff because it could still cause some pretty nasty reactions, such as vomiting, diarrhea, or hyperactivity.