Is Eucalyptus Toxic to Cats?
Also known as: Silver Dollar Tree, Gum Tree, Blue Gum · Eucalyptus cinerea
What makes it toxic
Eucalyptus essential oil, rich in eucalyptol (1,8-cineole) and terpenes. Cats lack liver pathways to clear these compounds, so ingestion or heavy inhalation affects the nervous system and gut.
Warning signs to watch for
Drooling, vomiting, diarrhea, weakness, wobbliness, and with significant exposure, tremors or seizures. Diffuser use can cause drooling, lethargy and respiratory irritation.
What to do if your cat eats it
Remove the plant and any diffuser use from the home. Call your vet after any ingestion; go immediately if the cat is trembling, wobbly or breathing oddly.
Common questions
Is eucalyptus oil more dangerous than the plant for cats?
Yes. Concentrated oil — diffusers, sprays, baths — carries far more eucalyptol than a chewed leaf and is a well-documented hazard for cats.
Is dried eucalyptus in wreaths safe?
No. Dried stems keep their oils, and cats that chew decorations are exposed. Keep wreaths and bunches out of reach.
What if my cat only smelled the diffuser?
Watch for drooling, squinting, coughing or lethargy. If any appear, move the cat to fresh air and call your vet.
More plants checked for cats
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.