Can Cats Eat Sauerkraut?

With caution — a tiny amount of plain sauerkraut is not usually toxic to cats, but it is not an ideal food for an obligate carnivore and many recipes contain too much sodium or added onion, garlic, wine, or spices.

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Monitor at Home

Plain sauerkraut is only safe in tiny amounts

A lick or very small bite of plain sauerkraut is unlikely to harm most cats, but sauerkraut is salty, acidic, and not nutritionally necessary for cats. Avoid any sauerkraut made with onion, garlic, alcohol, or heavy seasonings, because cats are especially sensitive to allium ingredients.

How urgent is this?

Emergency

Go to the ER now

  • ● Sauerkraut or the meal it came with contained onion, garlic, chives, or leek
  • ● Your cat has tremors, seizures, severe weakness, collapse, trouble breathing, or extreme lethargy after eating a large salty portion
  • ● Your cat cannot keep water down or is showing serious neurologic signs after eating a large amount
Urgent

See a vet within 24 hours

  • ● Repeated vomiting or diarrhea
  • ● Marked drooling, abdominal discomfort, or refusal to eat
  • ● Increased thirst, disorientation, wobbliness, or unusual behavior after eating a larger amount
  • ● Your cat has kidney disease, heart disease, high blood pressure, or is on a sodium-restricted diet
Monitor

Watch at home, call if it worsens

  • ● Your cat licked or ate a very small amount of plain sauerkraut
  • ● Mild gas, one soft stool, or brief lip-smacking without other symptoms
  • ● Your cat stole a small bite from a plate and the ingredients were plain cabbage, salt, and fermentation only

How to Safely Feed Sauerkraut to Your Cat

If you choose to offer sauerkraut at all, keep it to a tiny taste only. Cats are obligate carnivores, so sauerkraut should never replace a balanced cat diet and is best avoided in cats with medical conditions that make sodium intake a concern.

  • Only offer plain sauerkraut with no onion, garlic, chives, leeks, wine, or spicy seasonings
  • Give only a very small taste, such as a lick or pea-sized amount
  • Rinse it first to reduce surface brine and sodium
  • Do not feed it regularly or in large portions
  • Stop and call your vet if your cat develops vomiting, diarrhea, weakness, wobbliness, or seems unwell
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Common Questions

Is sauerkraut toxic to cats?
Plain sauerkraut itself is not generally considered toxic in tiny amounts, but it is often too salty and acidic for cats and many recipes include dangerous add-ins like onion or garlic. Those allium ingredients are more toxic to cats than dogs and can damage red blood cells.
Why is onion or garlic in sauerkraut such a concern for cats?
Cats are the most susceptible common household species to allium toxicosis. Onion, garlic, chives, and leeks can cause oxidative damage to red blood cells and lead to hemolytic anemia, even at relatively small amounts compared with dogs.
Can cats benefit from the probiotics in sauerkraut?
There is no strong veterinary recommendation to use sauerkraut as a probiotic food for cats. If your cat needs digestive support, ask your veterinarian about diets or probiotic products formulated specifically for cats.
What symptoms should I watch for if my cat ate too much sauerkraut?
Watch for vomiting, diarrhea, drooling, poor appetite, increased thirst, weakness, wobbliness, tremors, seizures, pale gums, rapid breathing, or lethargy. If onion or garlic was present, signs of anemia may be delayed and still require veterinary attention.
How is this different from dogs eating sauerkraut?
Both cats and dogs can have stomach upset from rich or salty foods, but cats are more vulnerable to onion and garlic toxicity. Sauerkraut may be presented as an occasional probiotic topper for some dogs, but for cats it is less appropriate because cats are obligate carnivores and many sauerkraut recipes contain ingredients that are unsafe for them.

Sources

  1. Garlic and Onion (Allium spp) Toxicosis in Animals — Merck Veterinary Manual
  2. Salt Poisoning — Merck Veterinary Manual
  3. People Foods to Avoid Feeding Your Pets — ASPCA
  4. Common Cat Hazards — Cornell Feline Health Center

Disclaimer: The information provided in this article is for educational purposes only and does not constitute veterinary medical advice. Reading this content does not establish a veterinarian-client-patient relationship. Every pet is different — always consult a licensed veterinarian before making decisions about your pet's health, diet, or care. If you'd like personalized guidance, you can talk to one of our vets. If your pet is experiencing a medical emergency, contact your local emergency animal hospital immediately.

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