Can dogs eat rhubarb?
If your dog has just eaten rhubarb
Do this now
- Call your vet, especially if leaves were eaten
- Watch for drooling, weakness, tremors — call immediately if these appear
- Bring photos of the plant if possible
What your vet will want to know
Have this information ready when you call:
- Your dog's current weight
- Approximately when the incident happened
- How much your dog ate (a rough estimate is fine)
- Any symptoms you've already noticed (vomiting, weakness, drooling, etc.)
- Any medications your dog is currently on
The full picture
Rhubarb is a classic backyard plant that causes vet visits every spring. The leaves are the most toxic part — high in oxalic acid and oxalate crystals that bind with calcium and can cause kidney problems. Stems contain less but still enough to cause issues. Rhubarb desserts add sugar and sometimes pastry. Keep dogs away from rhubarb plants in the yard and never offer rhubarb in any form.
Only your vet should make this call. If you can't reach them, our 4-gate safety checker walks through when hydrogen peroxide is appropriate (and when it's dangerous — sharp objects, caustics, certain breeds, and more).
Check if vomiting is safe →Risks to watch for
- Kidney damage from oxalates
- Low blood calcium
- Tremors
- Vomiting and diarrhea
- Excessive drooling
Symptom timeline
Symptoms typically progress in stages. Knowing what to expect helps you act fast:
- 0–2 hours If leaves eaten: drooling, vomiting, tremors
- 2–12 hours Signs of oxalate toxicity: lethargy, weakness, decreased urination
- 24–72 hours Acute kidney injury signs: increased thirst/urination, vomiting, not eating
Safe portion size
None.
Safer alternatives
- Apple slices
- Blueberries
- Strawberries
Common questions
My dog just ate rhubarb — is it an emergency?
It depends on how much was eaten and your dog's size. Any amount of rhubarb warrants a call to your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — don't wait for symptoms. Small dogs reach toxic thresholds on smaller amounts than large dogs, but individual sensitivity varies too.
How long until symptoms appear after eating rhubarb?
Onset varies. Some toxicities (xylitol, caffeine) cause symptoms within 15–60 minutes. Others (onion, garlic, grapes) have delayed onset — symptoms may not appear for 24–72 hours, and clinical signs can still build days later. Always contact a vet immediately, even if your dog looks fine.
What's the treatment if my dog ate rhubarb?
Treatment depends on the substance and the timing. Options can include induced vomiting (only within the first hour or so and only under vet instruction), activated charcoal to limit absorption, IV fluids to support the kidneys or liver, blood tests to monitor organ function, and specific medications for symptoms like tremors or seizures. Never attempt home treatment without vet guidance.
Are there any safe alternatives to rhubarb?
See the alternatives section above. Most toxic human foods have perfectly good dog-safe alternatives — plain cooked meat, plain vegetables, or commercial dog treats designed for canine metabolism. There's no nutritional reason your dog needs human foods with known toxicity risks.
Unexpected vet bills can run into thousands
One emergency visit for food poisoning can cost $500–$10,000+. Compare US pet insurance in 60 seconds.
Learn about vet costs & insurance →Sources
The information on this page is compiled and cross-checked against these authoritative US veterinary and toxicology sources:
- ASPCA Animal Poison Control Center — 24/7 poison hotline and comprehensive toxic food database
- Pet Poison Helpline — veterinary toxicology service
- Merck Veterinary Manual — peer-reviewed clinical reference
- American Veterinary Medical Association (AVMA)
- American Kennel Club Expert Advice
- Cornell University College of Veterinary Medicine
Specific toxicity thresholds cited on this page come from the above sources; where they disagree, we cite the more conservative figure. Numbers are general guidance — individual dogs vary in sensitivity based on age, breed, medications, and health conditions. When in doubt, always call your vet.
Checked against US veterinary guidance — see our editorial standards and source list. If your dog has eaten something and you need urgent advice, call a vet or the ASPCA Animal Poison Control Center on (888) 426-4435.