Can cats eat macadamia nuts?
Last updated 2026-05-08 · Sourced from ASPCA & Merck Veterinary Manual
The short answer
Sometimes — with caution — cats should only have small amounts of macadamia nuts. Not well-studied — avoid Round buttery tree nut, often in cookies.
Remember: cats are obligate carnivores. They derive almost all their nutrition from animal protein, so even "safe" plant foods are treats — not staples.
Why be careful
Less documented in cats but the risk-benefit doesn't justify trying.
What every cat owner should know
- Just don't
What to do if your cat ate macadamia nuts
- Stay calm. Note how much was eaten and when.
- Call your vet or ASPCA Animal Poison Control at 888-426-4435.
- Or Pet Poison Helpline: 855-764-7661.
- Do not induce vomiting in cats unless instructed by a vet — it's risky.
- Bring product packaging to the vet visit.
Kitten safety
Generally avoid feeding macadamia nuts to kittens. Their digestive systems are still developing and they're more sensitive to changes in diet, fat, sodium, and lactose than adults. If you've already given some, watch for vomiting, diarrhea, or lethargy and contact your vet if any appear.
What to do if your cat ate macadamia nuts
- Note how much was eaten and when. A small amount is rarely an emergency, but a large quantity may need vet attention.
- Watch for symptoms over the next 12–24 hours: vomiting, diarrhea, lethargy, loss of appetite, or changes in drinking/urination.
- Provide fresh water and skip the next meal if your pet seems unsettled — let their stomach calm down.
- Call your vet if symptoms appear or persist beyond 24 hours, or if the amount eaten was significant.
Better alternatives
If your cat likes macadamia nuts, they may also enjoy these safe options: