§ Toxic plants · Proteaceae · Checked Oct 2026
Is macadamia tree toxic to cats and dogs?
Yes. Macadamia tree (Macadamia integrifolia) is toxic to cats and dogs, according to the ASPCA Animal Poison Control Center. Plant Smart rates its effects Severe, level 3 of 4.
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§ 010 · Signs
What to watch for
Signs include dullness or depression, weakness, vomiting, tremors, fever, stiffness, irregular heartbeat and fast heartbeat. Signs can start within hours; some take a day or more to show.
§ 020 · If it happened
What to do if your pet ate it
Call your vet or a pet poison hotline straight away, even if your pet seems fine: the ASPCA Animal Poison Control Center, (888) 426-4435, or Pet Poison Helpline, (855) 764-7661. Both are open 24 hours and charge a fee. Have the plant or a photo of it to hand, and don’t make your pet vomit unless a vet tells you to.
§ 040 · Questions
Questions about macadamia tree and pets
Is macadamia tree toxic to cats?
Yes. ASPCA lists macadamia tree as toxic to cats.
Is macadamia tree toxic to dogs?
Yes. ASPCA lists macadamia tree as toxic to dogs.
What happens if my pet eats macadamia tree?
Signs include dullness or depression, weakness, vomiting, tremors, fever, stiffness, irregular heartbeat and fast heartbeat. Plant Smart rates it Severe, level 3 of 4.
What should I do if my pet ate it?
Call your vet or a pet poison hotline right away, even before signs appear: the ASPCA Animal Poison Control Center at (888) 426-4435, or Pet Poison Helpline at (855) 764-7661. Both charge a fee. Have the plant, or a photo of it, to hand.
What else is macadamia tree called?
Macadamia tree is also sold or known as nelmac ii.