Pet Health

Macadamia Nuts and Other Nuts That Are Toxic to Dogs

Learn about macadamia nuts and other toxic nuts for dogs. Discover which nuts to avoid to keep your furry friend safe and healthy.
Author: Veterinary Team
Dial A Vet
Updated
June 6, 2025
|
Published
June 6, 2025
Plate of macadamia nuts and other nuts with a warning sign about their toxicity to dogs.

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As pet parents, we all want to share life’s little joys with our dogs—whether it’s a piece of fruit, a bite of dinner, or a handful of nuts while watching TV. But did you know that certain nuts, including macadamia nuts, can be highly toxic to dogs? Knowing which nuts to avoid and which are safer can make all the difference for your dog’s health and happiness.

🩺 Vet Insight

Dogs’ digestive systems are different from ours, and some foods we consider harmless can be dangerous or even life-threatening to them. Macadamia nuts are one of the most toxic nuts for dogs, causing symptoms like vomiting, tremors, and weakness. Other nuts, such as walnuts, pecans, and pistachios, can also pose risks due to toxicity, choking hazards, or high fat content.

Even nuts that aren’t inherently toxic can cause issues like pancreatitis or gastrointestinal upset, especially if consumed in large quantities. Understanding why some nuts are harmful and how to prevent accidental ingestion is key to keeping your dog safe.

⚠️ Ingredients to Avoid

Here’s a list of nuts that are toxic or harmful to dogs and why you should keep them out of reach:

  • Macadamia nuts: These are highly toxic to dogs and can cause symptoms like vomiting, tremors, hyperthermia, and weakness. Even a small amount can be dangerous.
  • Walnuts: Moldy walnuts contain mycotoxins, which can cause seizures or other neurological symptoms. Fresh walnuts are also high in fat, leading to potential digestive issues.
  • Pecans: Like walnuts, pecans can develop mold containing harmful mycotoxins. They’re also a choking hazard and high in fat.
  • Pistachios: While not as toxic as macadamia nuts, pistachios are high in fat and can cause pancreatitis if eaten in large amounts. They can also be difficult for dogs to digest.
  • Almonds: Though not toxic, almonds are hard to digest and can cause gastrointestinal upset or blockages, especially in smaller dogs.

In addition to the nuts themselves, flavored or salted nuts are particularly harmful. The added salt, sugar, or seasonings can lead to sodium ion poisoning, obesity, or gastrointestinal irritation.

✅ Safer Alternatives

If you want to share a treat with your dog, there are safer alternatives to toxic nuts. Stick to options that are low in fat, easy to digest, and non-toxic:

  • Peanuts: Plain, unsalted peanuts (in moderation) are generally safe for dogs. Avoid peanut butter with xylitol, an artificial sweetener that is highly toxic to dogs.
  • Coconut: Small amounts of unsweetened coconut meat or oil can be a safe and tasty treat for dogs.
  • Cashews: Unsalted and unflavored cashews are safe in small quantities, but their high fat content means they should only be given occasionally.
  • Dog-safe fruits: Fruits like blueberries, apples (without seeds), or bananas are excellent, nutrient-rich snacks for dogs.

Always introduce new foods slowly and in small amounts to monitor for any adverse reactions. Even safe treats can cause issues if overfed.

💡 Final Advice

Accidents happen, and if your dog gets into a bag of nuts, it’s important to act quickly. If you suspect your dog has eaten macadamia nuts or any other potentially harmful nuts, contact a veterinarian immediately. The sooner your dog receives care, the better the chances of avoiding serious complications.

To prevent accidental ingestion, keep nuts and nut-containing foods stored in secure containers out of your dog’s reach. Educating friends and family members about the risks can also help ensure your dog stays safe.

When in doubt, consult with a vet. If you notice symptoms like vomiting, lethargy, tremors, or changes in behavior, don’t wait—these could be signs of nut toxicity or another serious condition.

FAQs

Q: What should I do if my dog eats macadamia nuts?
A: Contact your veterinarian immediately. Symptoms of macadamia nut toxicity can appear within 12 hours and include vomiting, tremors, and weakness. Early intervention is key.

Q: Are peanuts safe for dogs?
A: Plain, unsalted peanuts are generally safe in moderation. Avoid flavored or salted peanuts and peanut butter containing xylitol.

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References

While every effort is made to ensure the accuracy of this content - including vet review where applicable - this article is for informational purposes only and is not a substitute for professional veterinary advice, diagnosis, or treatment. If your pet is unwell or you are concerned, please speak with a licensed veterinarian. You can book a $49 online consultation with our veterinary team  😄
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