Last Updated on April 16, 2026 by admin
Short answer: No. Cats should not eat rhubarb.
Rhubarb stalks are less risky than the leaves, but neither is a safe cat snack. The leaves are the bigger concern because rhubarb contains soluble oxalates that can trigger stomach upset and, in more serious cases, low calcium and kidney injury.
Why rhubarb is a risk
Rhubarb exposure can cause drooling, vomiting, diarrhea, weakness, tremors, and other signs. If you want broader plant-safety context, see our guides to What Plants Can Cats Eat?, What Greens Can Cats Eat?, Is Arugula Toxic to Cats?, and Can Cats Eat Lilies?
Symptoms to watch for
- Drooling or pawing at the mouth
- Vomiting or diarrhea
- Loss of appetite
- Lethargy or weakness
- Tremors, twitching, or seizures
- Increased thirst, increased urination, or bloody urine
When to call a vet or poison hotline
Call your veterinarian or a pet poison hotline right away if your cat ate any part of rhubarb, including leaves, stems, or yard trimmings. Do not wait for symptoms. If your cat has trouble breathing, collapses, or has seizures, go to an emergency vet immediately.
In the U.S., ASPCA Poison Control is available 24/7 at (888) 426-4435, and Pet Poison Helpline is available 24/7 at (800) 213-6680.
How to keep cats safe
Keep rhubarb out of reach, and treat compost piles and garden clippings as off-limits.