Just for the record, Poison Control handles pet poisonings just as well as human poisonings. Our poodle, Minky, ate my whole big Valentine box last year, cardboard, cellophane and all. What they told me is that Milk Chocolate is fairly mild. My dog is about 80lbs so he would have to each a heck of a lot of milk chocolate to be endangered. Dark chocolate is much more serious. A pound of dark chocolate can kill a small dog.
Lucky for us, Minky survived. He had quite a stomachache but he recovered