Chocolate Candy Bars
Chocolate is probably the most well-known toxic food for dogs. Dr. Gordon explains that chocolate (especially dark chocolate and baker’s chocolate) contains theobromine, which is toxic in high doses and can cause symptoms such as vomiting and diarrhea.
Dr. Bartges adds that it can also cause excitation and seizures. “Another issue may be GI obstruction if they eat a lot, and the paper causes obstruction or possibly either bloat or a twisting of the stomach called gastric dilatation volvulus, which can be life threatening,” says Dr. Bartges.