Is Poison Oak Toxic to Cats?
Also known as: Pacific Poison Oak, Atlantic Poison Oak, Toxicodendron diversilobum · Toxicodendron diversilobum
What makes it toxic
Urushiol, the same oily allergenic resin found in poison ivy, present in leaves, stems and roots year-round, even on bare winter canes.
Warning signs to watch for
Redness and itching on thinly furred skin, plus drooling, vomiting or diarrhea if leaves were chewed.
What to do if your cat eats it
Glove up and bathe the cat to remove the oil, rinse the mouth if chewed and call your vet for a spreading rash or persistent vomiting.
Common questions
Is poison oak worse than poison ivy?
They carry the same urushiol; potency differences come down to individual plants and individual sensitivity, not the species.
Can indoor cats encounter poison oak?
Only if the oil rides in on your clothes, boots or a dog’s coat — a real route for indoor exposure worth knowing about.
Is the oil active in winter?
Yes. Bare stems and roots still carry urushiol, so a cat rubbing a dead-looking vine is not safe either.
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.