If your dog is small or ingests an unknown quantity of chocolate, take them to the vet immediately. Do not wait for symptoms to appear.
If you know exactly how much your dog ate, contact your veterinarian. After calculating the amount of toxin ingested relative to your dog’s weight, the vet will likely recommend either a watch-and-wait approach or immediate emergency treatment.
Remember, when in doubt, always have your dog checked out by your veterinarian, or call the ASPCA Poison Control hotline, toll-free at (888) 426-4435 for immediate answers.