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Is Eucalyptus toxic to cats?

YES (TOXIC)
Unfortunately, Eucalyptus is toxic and potentially harmful to cats. We recommend you keep your feline friends away from this plant. See the table below for more information.
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Additional Names:Many cultivars
Scientific Name:Eucalyptus species
Family:Myrtaceae
Toxic Principles:Essential oils: eucalyptol
Clinical Signs:Salivation, vomiting, diarrhea, depression, weakness
If you think your cat may have ingested a poisonous substance, call 888 426 4435 or your local vet
Detailed Write-up
Author:
Alec
Last Updated:
7/13/25

Is Eucalyptus Toxic to Cats?

Eucalyptus is a popular plant known for its distinct scent and medicinal properties. Its leaves, oil, and bark are commonly used for a variety of purposes, including as a natural remedy for respiratory ailments. However, as a cat owner, it's important to consider whether eucalyptus is safe for your feline friend. In this article, we'll explore the evidence on eucalyptus toxicity and its potential effects on cats.

Eucalyptus and its Active Compounds

Eucalyptus trees (Eucalyptus spp.) are native to Australia but can be found in many other countries worldwide, including the United States. The plant produces an essential oil that contains many different chemical compounds, such as eucalyptol and alpha-pinene. These compounds are known for their antiseptic, anti-inflammatory, and analgesic properties. They are often used in over-the-counter remedies for coughs, colds, and other respiratory issues in humans.

While eucalyptus is generally regarded as safe for humans, the same cannot be said for cats. The essential oil and the plant itself contain compounds that may be toxic to felines, especially in high doses.

Eucalyptus Toxicity in Cats

Cats are known for their curious and adventurous nature. They are notorious for investigating and tasting anything that catches their attention, including plants. Unfortunately, some plants can be toxic to cats, causing a range of symptoms from mild digestive upset to life-threatening conditions.

When it comes to eucalyptus, there is limited research on its toxicity in cats. However, some of the plant's compounds have been shown to be toxic or irritating to cats in various studies. One study published in the Journal of Toxicology and Environmental Health found that eucalyptus essential oil was toxic to cats in oral and dermal exposure tests. Another study published in the Journal of Veterinary Pharmacology and Therapeutics showed that applying eucalyptus oil to the skin of cats caused skin irritation, and in some cases, systemic toxicity.

Other reports suggest that eucalyptus oil may cause drooling, vomiting, and respiratory distress in cats if they ingest or inhale the oil or the plant's leaves. The ASPCA Animal Poison Control Center also lists eucalyptus as a plant that is toxic to cats and dogs, and advises that cat owners should avoid exposing their pets to it.

Symptoms of Eucalyptus Toxicity in Cats

If your cat has been exposed to eucalyptus or its essential oil, you should watch for the following symptoms:

  • Vomiting
  • Drooling or excessive salivation
  • Respiratory distress (coughing, wheezing, difficulty breathing)
  • Lethargy or weakness
  • Loss of appetite

If your cat is showing any of these symptoms, you should seek veterinary attention immediately. Eucalyptus toxicity can be serious, and prompt treatment can increase the chances of a full recovery.

Preventing Eucalyptus Exposure in Cats

To keep your cat safe, it's best to avoid exposing them to eucalyptus or its essential oil altogether. Here are some steps you can take to prevent your cat from coming into contact with the plant:

  • Do not have eucalyptus plants in or around your home or garden.
  • Avoid using eucalyptus essential oil or products that contain it around your cat.
  • If you must use eucalyptus products, make sure they are kept out of your cat's reach and do not allow your cat to inhale or ingest them.

Conclusion

In conclusion, while eucalyptus is generally safe for humans, it can be toxic to cats in various forms. Its essential oil and the plant itself contain compounds that may cause oral and dermal toxicity, skin irritation, and respiratory distress in cats. If you suspect your cat has been exposed to eucalyptus or is showing any symptoms of toxicity, seek veterinary attention immediately. The best way to protect your feline friend is to avoid exposing them to eucalyptus or its essential oil altogether.

As a responsible pet owner, you should always be aware of the potential hazards that may affect your cat's health and wellbeing. By taking the necessary precautions and keeping your cat safe, you can ensure that they live a long, happy, and healthy life.

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