Pistachios are not toxic to cats, but they are a poor and slightly risky snack. They are fatty and usually heavily salted, which upsets a cat's stomach and adds sodium, and the shells are a choking and obstruction hazard. Pistachios can also carry aflatoxin mold, so they are not something to share.
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Caution — salt, fat, and shellsAmount, form, or frequency matters
Can cats eat pistachios? 🥜
Pistachios are not toxic to cats, but they are a poor and slightly risky snack. They are fatty and usually heavily salted, which upsets a cat's stomach and adds sodium, and the shells are a choking and obstruction hazard. Pistachios can also carry aflatoxin mold, so they are not something to share.
Source-linked record · Last reviewed July 17, 2026 · Not veterinary advice
Why this answer
Pistachios combine a high fat content that burdens a carnivore's digestion with the heavy salt of most packaged versions, a poor mix for a small cat. The hard shells are a genuine choking and gut-obstruction risk if swallowed. Pistachios are also prone to Aspergillus growth and aflatoxin, a mold toxin that stresses the liver, which is one more reason to keep them away.
Watch for
Vomiting or diarrhea from fat and salt
Choking or gagging on a shell
Increased thirst, and lethargy if aflatoxin-contaminated nuts were eaten
How much is okay
None recommended; at most a tiny piece of a plain, unsalted, shelled pistachio, never salted nuts or whole shells.
Serve it safely
Remove shells and offer only plain, unsalted nut if you share at all.
Avoid salted, flavored, and dyed pistachios.
Keep shells out of reach, since they are a choking hazard.
Sources and evidence notes (3)
People Foods to Avoid Feeding Your Pets
ASPCA Animal Poison Control Center — Multi-species veterinary toxicology list covering alcohol, chocolate, caffeine, citrus, coconut, grapes and raisins, macadamia nuts, milk and dairy, nuts, onions, garlic and chives, raw meat and eggs, salty snacks, xylitol, and yeast dough.
Petfoodology
Cummings School of Veterinary Medicine at Tufts University — Board-certified veterinary nutritionist guidance on pet diets, treat limits (about 10% of daily calories), human-food snacks, and species-appropriate feeding for cats and dogs.
Poison List
Pet Poison Helpline — Veterinarian-maintained toxin database for dogs and cats, reachable at (855) 764-7661, with per-substance toxicity levels, signs, and species notes.
Answer card
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Remove access. Take the food away and move your cat to another room.
Note the facts. What was it, roughly how much is missing, and when? Keep the packaging.
Call before symptoms. For chocolate, onion, garlic, grapes, raisins, alcohol, or anything sugar-free (xylitol), call a hotline or your veterinarian now — early treatment is easier and cheaper.
Never do this
Do not induce vomiting, feed milk, salt, or oil, or wait overnight to "see how it goes". Signs of chocolate or Allium poisoning can take hours to days to appear.
Go to an emergency vet immediately if
Your cat is collapsing, twitching or seizing, struggling to breathe, drooling heavily, vomiting repeatedly, or wobbly on their feet.
Outside the US? Call your local emergency veterinary clinic — keep the number saved in your phone.
Effective: July 17, 2026
Can Cats Eat It? provides general educational information for cat owners. It is not veterinary, diagnostic, treatment, or emergency advice.
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