22. Cinnamon
Cinnamon is a spice used in many dishes due to its unique flavor. It also has many beneficial properties, such as antioxidants and anti-inflammatory agents. But although it’s healthy for humans, it can be harmful to dogs.
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What happens if your pet eats it? Cinnamon or its oil can cause vomiting, diarrhea, and liver diseases. In its powdered form, it can cause coughing and other breathing difficulties.