Hopefully, everyone knows that small amounts of certain kinds of chocolate (especially the dark chocolates) can kill your dog.

Jo, a reader, had a heart-stopping day when one of her dogs got into a box of chocolates. She found this National Geographic Chocolate Chart which lists different kinds of chocolates and lets you determine by your dog’s weight whether you need to rush your dog to the vet or let nature take its course.

To change the weight to what your dog weighs, slide the small yellow tab by the “1” up or down to the correct weight.

For example, Kiera at 49 lbs., could eat 405 ounces of white chocolate and expect no more discomfort than vomiting and diarrhea. (Yeah, I think anyone eating about 25 POUNDS!!! of white chocolate would expect a little vomiting and diarrhea.) Yet if she ate only 3 ounces of cocoa, she could be facing death!

While we’re aware of the danger of chocolate (among other human foods) and are extremely careful, we also know a variation on Murphy’s Law operates for dogs too — if a dog can find a way to eat what it’s not supposed to, it will. So I’ve printed out the charts for both my dogs and have them with the emergency phone #s.