Every dog is different. Individual allergies and sensitivities are common — always introduce new foods in small amounts and watch for adverse reactions. This site is for informational purposes only and is not veterinary advice. Always consult your vet.
The Full Picture
Cinnamon is not toxic to dogs, and small amounts added to food are generally safe. It may even have anti-inflammatory and blood sugar-regulating properties. However, large quantities of cinnamon can irritate the mouth and digestive tract, causing coughing, choking, or breathing difficulty. Cinnamon essential oil is much more concentrated and should be kept away from dogs. Cinnamon sticks are a choking hazard. If using cinnamon, sprinkle a tiny pinch (less than a teaspoon) onto food.
What You Should Know
While cinnamon is not outright toxic, there are important precautions to bear in mind before sharing it with your dog. Portion size matters, and certain preparations or varieties may be unsafe. If your dog has any existing health conditions, check with your vet first.