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Is Basil toxic to cats?

NO (NON-TOXIC)
Good news, Basil is a cat safe plant! While this plant is non-toxic, it may still irritate your cat's tummy and potentially cause vomitting or diarrhea if ingested.
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Additional Names:Saint Joseph's Wort, Thai Basil, Sweet Basil
Scientific Name:Ocimum basilicum
Family:Lamiacea
Detailed Write-up
Author:
Alec
Last Updated:
7/13/25

Is Basil Toxic to Cats?

As a cat owner, it is important to keep your furry friend safe by making sure they don't ingest anything toxic or harmful to their health. This includes being aware of potential dangers in common household plants, such as basil.

What is Basil?

Basil, also known as Ocimum basilicum, is a popular herb used in cooking, as well as for its medicinal properties. It belongs to the mint family and has a pungent, sweet smell and taste. Basil is native to tropical regions in central Africa and southeast Asia and is now commonly grown all over the world for culinary and medicinal purposes.

Is Basil Toxic to Cats?

While basil itself is not toxic to cats, it can still cause mild to moderate digestive upset if ingested in large amounts. The ASPCA lists basil as a plant that is toxic to cats and dogs, but this is based on anecdotal evidence rather than scientific studies.

There is limited research on the effects of basil on cats. However, it is important to note that some cats may be more sensitive to herbs and spices than others. Cats have a unique digestive system that is not designed to process certain types of food, so it is always best to err on the side of caution.

What are the Signs of Basil Toxicity in Cats?

While rare, in certain cases where a cat has ingested a large amount of basil, it can cause digestive upset, such as vomiting and diarrhea. These symptoms can be mild to severe, depending on the amount ingested and the individual cat's sensitivity.

The symptoms of basil toxicity in cats can include:

  • Vomiting
  • Diarrhea
  • Lethargy
  • Loss of appetite
  • Dehydration

If your cat displays any of these symptoms after ingesting basil, it is important to contact your veterinarian immediately. Be sure to bring a sample of the plant with you to the vet, as this will help them identify the cause of your pet's symptoms.

What Should You Do if Your Cat Eats Basil?

If your cat has ingested basil, it is important to monitor them closely for any signs of digestive upset or other symptoms. If your cat displays any of the symptoms listed above, seek immediate medical attention.

It is also a good idea to call your veterinarian or an animal poison control center for advice on what to do next. They may recommend inducing vomiting or offering activated charcoal to help absorb any remaining toxins in your cat's system.

Overall, prevention is key when it comes to keeping your cat safe from potential toxins. It is best to keep basil and other herbs out of reach of cats, or to limit their exposure to these plants.

Conclusion

While basil is generally safe for cats to eat in moderation, it is important to be aware of the potential risks and symptoms of toxicity. Ingestion of large amounts of basil can cause digestive upset and other symptoms, so it is important to monitor your cat closely and seek medical attention if necessary. As always, it is best to err on the side of caution and keep your cat away from potentially harmful substances.

References:

  • ASPCA. (n.d.). Toxic and Non-Toxic Plants. Retrieved from https://www.aspca.org/pet-care/animal-poison-control/toxic-and-non-toxic-plants/basil
  • Cinema, G., Fascetti, A. J., & Kohn, B. (2015). Owner Perceived Differences Between Cat Breeds, and Between Cats from Different Visual Domains. Journal of Applied Animal Welfare Science, 18(3), 214–223. https://doi.org/10.1080/10888705.2014.949317
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