Can dogs eat chocolate?
Toxic to dogs. It contains theobromine and caffeine, which dogs clear from the body far more slowly than people do.
Chocolate is one of the most consistently documented toxic foods for dogs. It contains theobromine and caffeine, stimulants that a dog's body breaks down slowly, so they can build to harmful levels. Darker and baking chocolate carry the most theobromine per gram; white chocolate the least. Veterinary sources describe ingestion as a case for urgent veterinary attention.
Classification reflects guidance from ASPCA, VCA, PDSA.
Note. Food-safety classifications are compiled from published guidance by the ASPCA, VCA Hospitals, the PDSA, Blue Cross and the UK Kennel Club. They are a general, documentary summary of established consensus, not a diagnosis or veterinary advice. Check the full can dogs eat…? list, and where a dog has eaten something unsafe the documented course is to contact a vet.