In Cinnamon Bad for Dogs?

The good news is that cinnamon is not toxic to dogs. ... The helpline also warns that a large cinnamon overdose can lead to vomiting, diarrhea, changes in heart rate, low blood sugar, and liver disease.

How much cinnamon can hurt a dog?

Research suggests that the amount of cinnamon that's safe for your dog is dependent on his weight. So, if your dog weighs 1-10 pounds (tiny, little pups), you shouldn't give him more than 1/8 teaspoon daily. If, however, you have a dog that's over 100 pounds, you can likely give him up to 2 teaspoons safely.

How much cinnamon kills a dog?

If you want the expert's hot take, the Pet Poison Helpline states that more than one teaspoon over cinnamon can spell trouble for most canines. Signs of a cinnamon overdose are vomiting, diarrhea, low blood sugar, and an altered heart rate.