Rhubarb

Q: Can cats eat Rhubarb? — CatToxic

Toxic: Never — oxalic acid damages the kidneys. Rhubarb contains oxalic acid and soluble oxalates throughout the plant — the leaves contain the highest concentration but the stalks are also harmful. Oxalates bind calcium in the blood, causing hypocalcemia and can deposit as crystals in the kidneys, causing acute kidney failure. Cats are particularly vulnerable due to their smaller size.

Q: Symptoms to watch for

drooling, vomiting, diarrhea, weakness, tremors, abnormal urination

Toxic

Verdict

Never — oxalic acid damages the kidneys.

Toxic principle: oxalic acid

Source: ASPCA

If your cat ate this

Cats hide symptoms — don't wait and see. Even small amounts of certain substances can be fatal to a cat. Act fast.

1. Call your veterinarian immediately
2. ASPCA Animal Poison Control: (888) 426-4435
3. Pet Poison Helpline: (855) 764-7661 (consultation fee applies)

A consultation fee may apply for poison control hotlines.

Verdict

Rhubarb contains oxalic acid and soluble oxalates throughout the plant — the leaves contain the highest concentration but the stalks are also harmful. Oxalates bind calcium in the blood, causing hypocalcemia and can deposit as crystals in the kidneys, causing acute kidney failure. Cats are particularly vulnerable due to their smaller size.

Symptoms to watch for

• drooling
• vomiting
• diarrhea
• weakness
• tremors
• abnormal urination

What to do

Call your vet immediately if any part of the rhubarb plant was consumed. The leaves are especially dangerous.

📞 US ASPCA Animal Poison Control: (888) 426-4435

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