Can Dogs Eat Macadamia Nuts?
No — macadamia nuts cause a distinctive poisoning syndrome in dogs: weakness especially in the hind legs, tremors, vomiting, and fever. It usually resolves within a couple of days but always warrants veterinary follow-up.
Last reviewed: July 24, 2026
Why are they dangerous?
Exactly why macadamias affect dogs this way is still unknown, but the effect is well documented and is not typical of any other nut. Signs usually begin within 12 hours, the most striking being hind-limb weakness and a wobbly gait — the dog sits down and struggles to get up.
The picture resolves on its own within 24-72 hours in most dogs; even so, vomiting, fever, and tremors may need supportive care. Macadamias also often come inside chocolate-covered cookies — in which case two poisons are involved at once.
What to do if your dog ate macadamia nuts
Note how many and when, then call your veterinarian. If the product contained chocolate, say so. Call even if there are no symptoms yet — early assessment prevents avoidable deterioration.
Watch for these signs
- Hind-leg weakness, wobbliness
- Tremors
- Vomiting
- Fever (raised body temperature)
- Lethargy, reluctance to walk
If you notice any of these, contact a veterinarian without waiting.
Frequently asked questions
Can just a few macadamias cause problems?
Yes — macadamias are one of the rare nuts that can cause signs at relatively small amounts. Note the number and time, and check with your veterinarian.
Are other nuts the same?
No — this specific syndrome is unique to macadamias. But walnuts, almonds, and others carry their own risks (fat, salt, obstruction, mould); see their pages.
Related answers
Sources
This guide is based on publications from the following veterinary bodies. Where sources differ, we take the more cautious position; the final decision is always your veterinarian's.