Cats should not eat cinnamon. Although cinnamon is not classified as toxic to cats by the ASPCA, it can cause health problems such as mouth, throat, and stomach irritation, digestive upset, increased heart rate, and even cinnamon toxicity if ingested in large amounts. Cinnamon essential oils are particularly dangerous and toxic to cats. Cats also lack the enzymes to digest cinnamon properly, so they do not benefit from it nutritionally, and even small amounts can cause mild issues. It is best to avoid exposing cats to cinnamon entirely and contact a vet if a cat ingests a large amount or shows any symptoms after exposure.

Summary:

• Cinnamon is non-toxic but can cause irritation and digestive issues.
• Large amounts can lead to toxicity, liver damage, and heart problems.
• Cinnamon essential oils are toxic to cats.
• Cats do not get health benefits from cinnamon.
• Avoid exposing cats to cinnamon or cinnamon-containing products.

If a cat accidentally eats a small amount, monitor them for any issues and seek veterinary advice if symptoms appear.