I am so glad you got help here for Gizmo and he is recovering well.
Chocolate is the third highest cause of poisoning in dogs and it takes very little for our yorkies to be ingest a toxic amount.
It only takes ONE OZ of milk chocolate for each pound a dog weighs
It only takes ONE OZ of dark Chocolate for every 3 lbs of body weight
So you can see with our little 3, 4 and 5 lb dogs it wouldn't take much at all of either milk or dark chocolate.
I am so paranoid about this that I don't even feed my dogs anything "chocolate flavored" like the dog treats they make like that beause i don't want them to get a taste of it and crave it and try even harder to get into it if it is left in an accessible location accidentally.
Her is a link to another thread on here from July where alot of useful info was posted.
http://www.yorkietalk.com/forums/sho...ocolate+poison