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Can Dogs Eat Macadamia Nuts? Neuromuscular Toxicity & Weakness Syndrome

Even small amounts of macadamia nuts cause temporary hind-limb paralysis, high fevers, and severe joint pain in canines.

Data reviewed October 24, 2026

Macadamia nuts are a unique canine toxin. As little as 0.7 grams of macadamia nuts per kilogram of body weight (less than 1 nut per 5 lbs) can induce acute weakness, hind-limb lameness, hyperthermia, and persistent vomiting in dogs.

Macadamia Nut Toxicity Indicators in Dogs
Dose Eaten Symptom Onset Primary Clinical Signs Prognosis
1–2 Nuts (Small Dog)3 to 6 HoursHind-limb weakness, wobbling, nauseaFull recovery in 24–48 hrs
5–10 Nuts (Medium Dog)6 to 12 HoursHigh fever (>104°F), tremors, inability to standHospital supportive care needed
Chocolate-Covered Nuts2 to 4 HoursCombined methylxanthine + macadamia toxicosisCritical dual emergency

The Hallmark Symptom: Hind-Limb Weakness

Dogs poisoned by macadamia nuts display a distinct 'drunken' gait (ataxia) and inability to rise on their hind legs. The condition is painful, and dogs often cry out when their rear joints or abdomen are touched.

Veterinary Support and Prognosis

Fortunately, macadamia nut poisoning is rarely fatal if supportive veterinary care is provided. Treatment involves pain relief, anti-nausea medications, IV fluids, and temperature cooling baths.

Frequently asked questions

Can dogs eat walnuts or almonds instead?
While walnuts and almonds do not carry the specific neurological toxin of macadamias, their high fat content can cause acute pancreatitis, and moldy walnuts can contain tremorgenic mycotoxins.
How long does macadamia nut poisoning last?
With supportive care, most dogs recover completely within 24 to 48 hours without permanent nerve or liver damage.

Sources

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