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If your cat ate willow oak — do this now

  1. Take the plant away and clear any pieces from their mouth.
  2. Do not induce vomiting unless told to by a professional.
  3. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 now.

Willow Oak is mildly toxic to cats (ASPCA).

Pet emergency

My cat ate Willow Oak — what to do

Step by step

  1. Take willow oak away and remove any plant material from your cat's mouth so they cannot eat more.
  2. Note roughly how much was eaten and when — this helps the vet judge the risk.
  3. Do NOT induce vomiting unless a vet or poison-control specialist tells you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 (a consultation fee may apply) and follow their advice.
  5. Watch for drooling, pawing at the mouth, vomiting, loss of appetite, or lethargy, and bring a leaf or photo to the appointment.

This is general guidance, not veterinary advice. Pets vary, and a reaction may be to soil, fertiliser, or pesticide as well as the plant. When in doubt, call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435.

My cat ate willow oak — FAQ

Is willow oak poisonous to cats?

Yes — the ASPCA lists Willow Oak (Quercus phellos) as mildly toxic to cats. As a Quercus species, Willow Oak leaves and especially acorns contain tannins and gallic acid that are toxic to horses, cattle, dogs, and cats when ingested in significant quantities. ASPCA lists Quercus (oak) as toxic to dogs, cats, and horses. Symptoms include vomiting, diarrhea, lethargy, and in serious cases kidney damage. The small, abundant acorns of this species pose a particular ingestion risk for dogs.

How serious is it if my cat ate willow oak?

Willow Oak is mildly toxic, so most cats get short-lived mouth irritation, drooling, and vomiting rather than a life-threatening reaction. It is still worth a vet call to be safe, especially if your cat ate a lot or symptoms persist.

What symptoms should I watch for?

Signs usually appear soon after chewing: drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy. As a Quercus species, Willow Oak leaves and especially acorns contain tannins and gallic acid that are toxic to horses, cattle, dogs, and cats when ingested in significant quantities. ASPCA lists Quercus (oak) as toxic to dogs, cats, and horses. Symptoms include vomiting, diarrhea, lethargy, and in serious cases kidney damage. The small, abundant acorns of this species pose a particular ingestion risk for dogs. Any worsening or persistent symptoms warrant an immediate vet visit.

Should I make my cat vomit?

No — do not induce vomiting unless a vet or the ASPCA Animal Poison Control Center specifically tells you to. The wrong action can make things worse. Call (888) 426-4435 and follow professional advice.

How do I stop this happening again?

Keep willow oak well out of reach, or swap it for an ASPCA non-toxic plant — see the best cats-safe plants list.

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