PetSafe Swaps & Nutrition
Can cats eat Rhubarb?
Quick answer: Rhubarb is generally considered safe for most healthy cats when fed in moderation. Aim for about 0 - Rhubarb should never be given to cats. and keep it within their daily calorie allowance.
- Toxic level
- Low
- Suggested amount
- 0 - Rhubarb should never be given to cats.
- Primary takeaway
- None. Rhubarb leaves and stalks contain high concentrations of soluble and insoluble oxalates, which bind calcium, cause acute kidney injury, and are toxic to cats even in small amounts.
Nutritional breakdown for cats
Rhubarb can be a fun addition to your cat's treat rotation. It offers None. Rhubarb leaves and stalks contain high concentrations of soluble and insoluble oxalates, which bind calcium, cause acute kidney injury, and are toxic to cats even in small amounts., but it is not a complete food and should never replace a cat-specific diet formulated to meet all daily nutrient needs. Most of the calories come from rhubarb's natural sugars and carbohydrates, so keep portions small — especially for pets with weight, pancreas, or blood sugar concerns.
Safe serving suggestions
- Preparation
- Keep rhubarb entirely out of reach of cats. Both the leaves (which are highly toxic) and the stalks contain significant oxalic acid. Cooked rhubarb in desserts such as pies or crumbles is equally dangerous due to added sugars and retained oxalates. There is no safe preparation method for cats.
- Portion
- 0 - Rhubarb should never be given to cats.
- Frequency
- Never safe. Rhubarb is toxic to cats at any dose due to oxalic acid, which can cause acute kidney failure. There is no safe serving frequency.
If your cat eats too much rhubarb
If your cat eats any part of rhubarb, contact your veterinarian or ASPCA Poison Control (888-426-4435) immediately. Symptoms of rhubarb toxicity include drooling, vomiting, lethargy, weakness, tremors, and changes in urination indicating kidney damage. Prompt veterinary treatment is critical.
Healthy alternatives to rhubarb
If you want to spoil your cat without second guessing every bite, choose options that are widely regarded as safer by veterinarians and pet nutritionists.
- 1Cooked pumpkin
- 2Blueberries
- 3Cooked zucchini
This guide is educational and not a substitute for individualized veterinary care. When in doubt, call your vet or a certified pet poison hotline before offering new foods.
Related safe treats for cats
Looking for alternatives to rhubarb? These guides cover other foods that are generally considered safer treats for most healthy cats when fed in moderation.
- Safe
Can cats eat Blueberries?
Suggested amount: 2–3 small berries for an adult cat, a few times per week at most.
- Safe
Can cats eat Watermelon?
Suggested amount: A few bite-sized cubes without seeds or rind, occasionally.
- Safe
Can cats eat Salmon?
Suggested amount: 1–2 teaspoons of cooked salmon for an adult cat, a few times per week.
- Safe
Can cats eat Eggs?
Suggested amount: 1–2 teaspoons of cooked egg for an adult cat, a few times per week.
Quick questions about rhubarb for cats
How much is too much?
Our general guideline for most healthy cats is 0 - Rhubarb should never be given to cats.. Going far beyond that in a single sitting increases the chance of stomach upset, and with safe foods it still adds extra calories that can contribute to weight gain over time.
Is rhubarb good for cats?
Generally yes — in sensible portions, this food can support your cat's health because it none. rhubarb leaves and stalks contain high concentrations of soluble and insoluble oxalates, which bind calcium, cause acute kidney injury, and are toxic to cats even in small amounts. It still should never replace a complete cat diet made for daily nutrition.
What warning signs should I watch for?
After eating rhubarb, keep an eye on your cat for changes in appetite, energy, behavior, and stool quality. Symptoms like repeated vomiting, watery diarrhea, obvious discomfort, or any worrying signs described in the emergency section above are reasons to call your veterinarian or an animal poison hotline right away.
Safety data follows our editorial standards →
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