I know people who have feed chocolate to their dogs every day for years and their hounds lived normal lives, but the risks are great. The alkaloid theobromine also known as xantheose is found in chocolate and is the substance toxic to dogs. There are 3 factors to consider, the type of chocolate, the size of the animal, and the amount of chocolate ingested. Different types of chocolate contain different concentrations of theobromine, Unsweetened baking chocolate has the highest amount and white has the least. Theobromine can kill your dog, if your hound eats chocolate, it risks digesting a lethal amount of theobromine.