Cinnamon is not toxic to dogs and can be safe for them to consume in small amounts. However, it is not necessary for dogs to eat cinnamon and it is not an essential part of their diet. In large amounts, cinnamon can be harmful to dogs and can cause irritation to the mouth and gastrointestinal tract, leading to vomiting and diarrhea.
If your dog eats a small amount of cinnamon, it is unlikely to cause any serious harm. However, it is still a good idea to monitor them for any signs of digestive upset and to contact your veterinarian if you have any concerns.
It is important to keep all spices, including cinnamon, out of reach of your dog. It is also a good idea to stick to feeding your dog a diet that is specifically designed for their nutritional needs, rather than giving them human foods as treats. This will help ensure that they are getting all of the nutrients they need to stay healthy. If you want to give your dog a treat, there are many dog-safe options available, such as small pieces of cooked, unseasoned meat or vegetables.