Why isn my dog getting sick when he eats chocolate?
Theobromine is the chemical in chocolate that makes dogs sick. The milk chocolate that your dog ate does not contain enough theobromine to hurt your dog. The more cacao in the chocolate the more toxic it is to your dog. Dark chocolate is much worse than milk chocolate.The chocolate does not “build up” in the system and signs of the theobromine poisoning are not long term. The theobromine remains in the system for 20 hours, and signs of theobromine poisoning usually occur in 12 hours. so if your dog didn’t get sick within 20 hours of eating the chocolate he is fine. Just try to be more carefull with were you leave the chocolate.