What happens if a 40 lb dog eats 4-5 oz of milk chocolate?

Theobromine is a chemical that is found in chocolate, and milk chocolate contains about 1.5 mg of theobromine per gram of chocolate. A 40 lb dog eating 4-5 oz of milk chocolate would consume about 180 mg of theobromine. Dogs can tolerate a dose of up to 20 mg of theobromine per pound of body weight, so a 40 lb dog could technically tolerate up to 800 mg of theobromine. So a 40 pound dog eating 4-5 oz of dark chocolate might experience some mild symptoms, such as vomiting and diarrhea. If a dog consumes more than 20 mg of theobromine per pound of body weight, it can experience more serious symptoms such as seizures, tremors, and cardiac problems. However, it is important to note that even if a dog does not consume a toxic dose of theobromine, it may still experience some gastrointestinal upset, such as vomiting and diarrhea. If you believe your dog has consumed a toxic amount of chocolate, it is important to contact your veterinarian immediately.