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My cat ate a handful of macadamia nuts, what symptoms should I watch for and do I need to call the vet?

Cats · Food safety

Last reviewed: 2026-09-05 · Reference ranges: ASPCA, Pet Poison Helpline & Merck Veterinary Manual

Short answer

Yes, macadamia nuts are toxic to cats and you need immediate veterinary attention. Cats can develop weakness, unsteady gait, and tremors within about 12 hours of ingestion. These signs can progress quickly, so do not wait to see if they improve. Call your vet right away or contact the ASPCA Animal Poison Control Center at 888‑426‑4435 for emergency guidance.

Macadamia nuts — Food safety facts

Do not feed · Cats · full breakdown on the linked food page

Toxic to dogs — weakness, wobbliness and tremors within 12 hours. Usually recoverable, but call your vet.

Open the full food page: Macadamia nuts food facts →

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