My Dog Ate Chocolate!!!

Question
My 20 lb Bichon ate ~1/3 (1/2 oz) of a See's Milk Chocolate with Toffee Nuggets bar at least 4 hours ago.  I was careless and I am worried - what should I be doing?

Answer
Probably too late to do anything now, but I would call up the emergency clinic (or your vet if you can reach him/her) and see what they have to say.

Normally, if one discovers this shortly after the dog ingests it, vomiting can be induced using hydrogen peroxide.