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If your dog ate chestnut 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.

Chestnut Oak is toxic to dogs (ASPCA).

Pet emergency

My dog ate Chestnut Oak — what to do

Step by step

  1. Take chestnut oak away and remove any plant material from your dog'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 dog ate chestnut oak — FAQ

Is chestnut oak poisonous to dogs?

Yes — the ASPCA lists Chestnut Oak (Quercus montana) as toxic to dogs. Oak (Quercus) is listed by the ASPCA as toxic to dogs, cats and horses. The toxic principle is tannins (gallotannic and tannic acid), concentrated in acorns, buds and young leaves. Ingestion causes vomiting, diarrhoea (possibly bloody), lethargy, abdominal pain and inappetence; substantial or repeated intake risks kidney and liver damage, and whole acorns can obstruct the digestive tract. Keep acorns and leaf litter away from pets and livestock even though the acorns are edible to people.

How serious is it if my dog ate chestnut oak?

Chestnut Oak is toxic to dogs and reactions can be significant, so treat any ingestion as urgent. Call your vet or poison control on (888) 426-4435 straight away rather than waiting to see if symptoms develop.

What symptoms should I watch for?

Signs usually appear soon after chewing: drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy. Oak (Quercus) is listed by the ASPCA as toxic to dogs, cats and horses. The toxic principle is tannins (gallotannic and tannic acid), concentrated in acorns, buds and young leaves. Ingestion causes vomiting, diarrhoea (possibly bloody), lethargy, abdominal pain and inappetence; substantial or repeated intake risks kidney and liver damage, and whole acorns can obstruct the digestive tract. Keep acorns and leaf litter away from pets and livestock even though the acorns are edible to people. Any worsening or persistent symptoms warrant an immediate vet visit.

Should I make my dog 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 chestnut oak well out of reach, or swap it for an ASPCA non-toxic plant — see the best dogs-safe plants list.

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