Cycads — (c) Oleg Kosterin, some rights reserved (CC BY), uploaded by Oleg Kosterin
Photo by (c) Oleg Kosterin, some rights reserved (CC BY), uploaded by Oleg KosteriniNaturalistCC BY
Pet safety reference

Cycads

Cycas and Zamia species

Cycads are ancient, palm-like gymnosperms that contain potent toxins throughout the entire plant, especially the seeds. Ingestion of any part of these plants is considered a medical emergency for pets.

Cardboard PalmCoontieCycas and Zamia speciesCycas revolutaSago Palm
Light
Bright indirect light
Habit
Slow-growing, woody stem
Care
Low to moderate

Safety status

Cats & Dogs

Potentially toxic

Consulted references classify the plant as toxic or irritating for that pet type.

Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.

Catsconcern notes

Common signs

Vomiting, diarrhea, lethargy, jaundice, increased thirst, and potential liver failure.

Escalation note

Extremely toxic; ingestion of even a small amount can be fatal. Contact your veterinarian or an emergency animal poison control center immediately if ingestion is suspected.

Dogsconcern notes

Common signs

Vomiting, bloody stools, jaundice, bruising, coagulopathy, and liver failure.

Escalation note

Highly dangerous; the seeds contain the highest concentration of toxins. Immediate veterinary intervention is required as the prognosis is guarded even with aggressive treatment.

Safer alternatives

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Source evidence

ASPCA Toxic Plant List

toxicology · 99% reliability

Open source

All parts of the Sago Palm are poisonous, but the seeds or 'nuts' contain the largest amount of the toxin cycasin.

Kew Plants of the World Online

botanical · 95% reliability

Open source

Taxonomic database covering the Cycadaceae and Zamiaceae families.

cats safety pageMy cat ate Cycadsdogs safety pageMy dog ate Cycads

Questions about Cycads

Are cycads toxic to cats?

Yes — cycads (Cycas and Zamia species) are extremely toxic to cats. The entire plant contains potent toxins, with the seeds being especially dangerous. Even a small amount can be fatal, making any ingestion a medical emergency.

What are the symptoms of cycad poisoning in cats?

Early signs — within 15 minutes to several hours — include drooling, vomiting (sometimes bloody), diarrhea, and loss of appetite. Over the next 1–3 days, liver failure can develop: watch for jaundice (yellow gums or eyes), increased thirst, lethargy, easy bruising, dark or tarry stools, and weakness or seizures.

What should I do if my cat ate part of a cycad?

Go to an emergency vet immediately — do not wait for symptoms to appear. Bring a sample or photo of the plant. Do not try to induce vomiting unless a vet or poison control directs you to. Call ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661) on the way.

How dangerous is cycad poisoning for cats — what are the survival odds?

Cycad poisoning is one of the most serious plant toxicoses in cats: approximately 50% of cases are fatal even with aggressive veterinary treatment. Survival depends heavily on how quickly decontamination begins, and hospitalization for several days is typical. Speed is critical — call your vet or ASPCA Animal Poison Control (888-426-4435) the moment ingestion is suspected, even if your cat appears fine.

Are cycads (sago palms) toxic to dogs?

Yes, cycads are extremely toxic to dogs — every part of the plant is dangerous, and ingestion of any amount is a medical emergency. The seeds carry the highest concentration of toxins, but the leaves, stems, and roots are also poisonous. Even a small piece can cause severe liver failure and death.

What symptoms will my dog show after eating a cycad?

Within 15 minutes to several hours: drooling, vomiting (often bloody), diarrhea, and loss of appetite. Over the following 1–3 days, as the liver begins to fail: jaundice, dark or tarry stools, easy bruising, increased thirst, weakness, wobbly gait, tremors, and seizures.

What should I do if my dog ate any part of a cycad?

Go straight to the nearest emergency vet — do not wait for symptoms to appear. Bring a sample or photo of the plant. Do not induce vomiting at home and do not give activated charcoal unless a vet or poison control directs you to. Call ASPCA Animal Poison Control at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661 on the way.

What is the survival rate for dogs that eat cycad seeds?

The prognosis is guarded even with aggressive treatment — Pet Poison Helpline reports roughly 50% mortality. Survival depends heavily on how quickly the dog is decontaminated, ideally within the first one to two hours of ingestion. Hospitalization typically runs at least 3–5 days.

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