Can dogs eat
Macadamia nuts?
No
No. Macadamia nuts are toxic to dogs, and even a few can cause weakness, vomiting, tremors and a high body temperature. Call your vet if your dog eats any.
Why it’s unsafe
Macadamia nuts cause a distinct kind of poisoning in dogs, and VCA notes it is currently recognized only in dogs. Nobody has identified the toxin. Merck, VCA and Pet Poison Helpline all say the mechanism is unknown, and Pet Poison Helpline adds that it affects nerve and muscle function.
According to the Merck Veterinary Manual, signs typically appear within 12 hours and include weakness, depression, vomiting, wobbly walking, tremors and hyperthermia (a dangerously high body temperature). Merck reports signs in dogs that ate macadamia nuts at 2.4 g/kg of body weight, and VCA says only a few nuts can make a dog sick. The smaller the dog, the fewer nuts it takes to reach that level.
Most dogs recover. Merck says signs generally resolve within 12 to 48 hours, and the ASPCA puts recovery at 24 to 72 hours. The nuts are also rich in fat, which can trigger pancreatitis in some dogs. Macadamias often hide in cookies, chocolate and trail mix, so the other ingredients may add dangers of their own.
Risks
- Weakness, wobbly walking, tremors, vomiting and a high body temperature
- Signs usually start within 12 hours and generally ease within one to three days
- The high fat content can trigger pancreatitis in some dogs
- Often found in cookies, chocolate and trail mix, which may add other toxins
What to give instead
Do not feed macadamia nuts in any form, including macadamia nut butter, cookies or mixed nuts. Store them well out of reach, and check mixed-nut tubs and baked goods before you share a bite.
For a crunchy reward, try carrots or green beans instead.
Related forms
| Food | Verdict | Why |
|---|---|---|
| Macadamia nut cookies | No | The nuts plus sugar and often chocolate; treat it as a poison call. |
| Macadamia nut butter | No | The same nuts, just ground. |
| Mixed nuts containing macadamias | No | One macadamia in the mix makes the whole bowl unsafe. |
If your dog already ate it
Call your vet, an emergency clinic, ASPCA Animal Poison Control at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661 (US; fees may apply) right away, even if your dog ate only a nut or two. Outside the US, call your local emergency vet. Have the packaging, a rough count of the nuts and your dog's weight ready.
Signs typically start within about 12 hours: vomiting, lethargy, a fever, weak or wobbly hind legs, stiff joints or tremors. Do not make your dog vomit at home. Your vet will decide whether decontamination is worthwhile and what supportive care your dog needs. If the nuts came in a chocolate or xylitol-sweetened product, say so, because that changes the treatment.
Frequently asked questions
How many macadamia nuts are toxic to a dog?
No safe amount is established. VCA says a few nuts can cause illness, and Merck reports signs in dogs at 2.4 g/kg of body weight. Call your vet about any amount instead of waiting for signs.
How soon do symptoms of macadamia poisoning start?
Merck says signs typically appear within 12 hours of eating the nuts.
Will my dog recover from eating macadamia nuts?
Most dogs do. Merck says signs generally resolve within 12 to 48 hours and VCA expects a full recovery with appropriate treatment, though pancreatitis is possible, so your vet should guide the plan.
Are other nuts safe for dogs?
Not automatically. The ASPCA warns that many nuts, including almonds, pecans and walnuts, are high in oils and fats that can cause vomiting, diarrhea and potentially pancreatitis.
Written from veterinary sources by the Pawsplained editorial team. Not yet reviewed by a veterinarian; this is general information, not a diagnosis or treatment plan. Updated Oct 30, 2026. Editorial policy