Can Cats Eat Hazelnuts?

Not recommended. Hazelnuts are not known to be specifically toxic to cats, but they are high in fat, can upset the stomach, and may become a choking or intestinal blockage hazard.

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Monitor at Home

Hazelnuts are not a good treat for cats

Hazelnuts are not established as a specific feline toxin, but they are still a poor choice for cats. Their high fat content can trigger vomiting or diarrhea, and whole nuts may pose a choking risk or cause a gastrointestinal foreign body, especially in smaller cats or if several are eaten.

How urgent is this?

Emergency

Go to the ER now

  • ● Trouble breathing, choking, gagging, or collapse after eating a hazelnut
  • ● Repeated vomiting with severe lethargy, weakness, or signs of severe abdominal pain
  • ● Ate hazelnuts coated in chocolate, xylitol-containing candy, coffee, raisins, or other toxic ingredients
Urgent

See a vet within 24 hours

  • ● Your cat ate several whole hazelnuts
  • ● Vomiting, diarrhea, drooling, loss of appetite, or belly pain after eating hazelnuts
  • ● You think a nut may be stuck in the mouth, throat, or stomach
Monitor

Watch at home, call if it worsens

  • ● Your cat licked or nibbled a tiny amount of plain hazelnut and is acting normal
  • ● A single small bite caused no symptoms
  • ● Mild, brief stomach upset that resolves quickly

Why Hazelnuts Aren't Ideal for Cats

Cats are obligate carnivores, so nuts do not offer meaningful nutritional benefits for them. Hazelnuts are calorie-dense and fatty, which can cause stomach upset, and whole nuts can become a choking hazard or intestinal foreign body. Unlike dogs, cats do not appear to commonly develop pancreatitis specifically from a high-fat diet alone, but fatty foods are still not recommended and any cat that vomits, stops eating, or seems painful should be seen by a veterinarian.

  • Do not intentionally feed hazelnuts to cats
  • Whole hazelnuts can be hard to chew and may be a choking or obstruction risk
  • High-fat foods can cause vomiting or diarrhea and may worsen digestive disease
  • Hazelnut spreads or candies may contain more dangerous ingredients like chocolate or xylitol
  • If your cat won't eat after an upset stomach, call your vet promptly because cats can get sick quickly when they stop eating
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Common Questions

Are hazelnuts toxic to cats?
Hazelnuts are not known to be specifically toxic to cats, but that does not make them a safe or recommended treat. They can still cause stomach upset and may be a choking or blockage hazard.
Can cats eat a small piece of plain hazelnut?
A tiny amount of plain, unsalted hazelnut is unlikely to cause poisoning in most cats, but it is still not a good snack choice. Because cats do not need nuts in their diet, it is best not to offer them on purpose.
Why is a whole hazelnut more concerning than a lick or crumb?
Whole nuts are round, firm, and difficult for cats to chew well. That makes them more likely to cause choking or act like a foreign body in the stomach or intestines if swallowed.
Is hazelnut spread like Nutella safe for cats?
No. Hazelnut spreads are not safe for cats because they may contain chocolate and large amounts of sugar and fat. Some sweet products can also contain xylitol, which is dangerous to pets. If your cat ate a hazelnut candy or spread, call your veterinarian.
How is this different from dogs?
In both cats and dogs, hazelnuts are more of a mechanical and digestive risk than a classic toxin. However, cats are obligate carnivores and nuts are even less appropriate for their diet. Also, while high-fat foods are a well-known pancreatitis concern in dogs, feline pancreatitis is less clearly linked to dietary fat alone, so the bigger concerns in cats are stomach upset, refusal to eat, and foreign body problems.

Sources

  1. Proper Nutrition for Cats — Merck Veterinary Manual
  2. Pancreatitis in Dogs and Cats — Merck Veterinary Manual
  3. Feline Pancreatitis — Cornell Feline Health Center
  4. Ingestion of Foreign Bodies in Cats — VCA Animal Hospitals

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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