My pekingese just ate chocolate?

You don't have to worry at all. It is fatal to dogs but then you know it doesn't really matter. I am serious. When I got my first dog, I didn't even know they couldn't eat chocolate so I fed it a piece of Chocolate. And then since he loved it so much, I bought him Chocolate everyday and I also fed him Chocolate Ice Cream from Baskin Robbins and also oreo cookies. Nothing ever bad happened to him. But then I stopped after I found it out online. So I am sure nothing will be wrong with your dog. Don't worry about it.