Is it toxic to dogs?
Sago palm
Cycas revoluta · Cycadaceae
Also called Cardboard palm, Coontie palm, King sago, Japanese sago palm, Cycad
Toxic to dogs
Severity: Severe
Yes, and it is one of the most dangerous plants a dog can chew. Every part of a sago palm is poisonous, the seeds most of all, and poisoning can lead to liver failure and death. Treat any bite as an emergency.

- Toxic parts
- All parts, Seeds (also called nuts) are the most toxic
- Toxic compounds
- Cycasin, beta-methylamino-L-alanine (BMAA)
- Where you’ll find it
- House and garden
- When signs start
- Vomiting and lethargy can start within 15 minutes to several hours, but liver damage may take 48 to 72 hours to show.
Signs of poisoning
- Vomiting, sometimes with blood
- Diarrhea
- Black, tarry stools
- Lethargy
- Increased thirst
- Weakness and unsteady walk
- Tremors
- Seizures
- Yellow skin or eyes (jaundice)
- Bruising or bleeding
- Liver failure
- Death
Why it’s harmful to dogs
Sago palm looks like a small palm tree with stiff, glossy, feathery fronds, but it is actually a cycad, an ancient plant group. It is sold as a houseplant and grown outdoors in warm regions, and the ASPCA also lists coontie palm and other cycads as toxic.
Every part is poisonous, and the seeds contain the most toxin. The main toxin is cycasin, which damages the liver. Merck Veterinary Manual also lists BMAA, and dogs can develop tremors and seizures. Merck calls dogs extremely sensitive and says many deaths result from liver damage. VCA says even a small amount can cause serious effects.
Dogs usually meet sago palms in yards, where seeds and fronds are within reach of a curious mouth, or in a pot indoors. Because the damage builds quietly, a dog that seems fine hours later may still be at risk.
If your dog ate sago palm
Treat any chewing on a sago palm as an emergency, even if your dog seems fine. Do not wait for signs. Phone your vet or an emergency clinic now, and let a poison helpline guide you from there. US owners can reach ASPCA Animal Poison Control at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661 (fees may apply); elsewhere, call your local emergency vet. Don't induce vomiting at home.
Early decontamination and supportive care by a vet give the best chance. VCA describes the outlook as generally fair with early diagnosis and treatment, while liver damage raises the risk of lasting problems or death. Merck says the outlook becomes guarded to poor if signs are noticeable or treatment is delayed.
Watch for vomiting, black stools, a swollen belly, yellow eyes or skin, and increased thirst. Your vet will likely run bloodwork to follow the liver.
Keeping your dog safe
The safest plan is to keep sago palms out of any home or yard a dog uses. If you already own one, consider removing it, or at least keep it where your dog can't reach the fronds or seed pods. Remember that landscaping at friends' homes, rental properties and hotels can include them too.
On walks, practice a firm "leave it" around unfamiliar plants. For a tropical look at home, a parlor palm or areca palm is listed by the ASPCA as non-toxic to dogs.
Dog-safe alternatives
Frequently asked questions
How much sago palm is dangerous to a dog?
There is no known safe amount. VCA says even a small amount can cause serious effects, and the seeds carry the most toxin. Call a vet as soon as you know your dog chewed any part.
Which part of the sago palm is most toxic?
The seeds, also called nuts. VCA and Merck Veterinary Manual both say every other part of the plant is poisonous too.
Can dogs survive sago palm poisoning?
Many dogs do when treatment starts early. VCA describes the outlook as generally fair with early treatment, but liver damage can cause lasting problems or death, and Merck says delayed treatment makes the outlook guarded to poor.
How soon do signs appear?
VCA says stomach upset and tiredness usually show within 15 minutes to several hours. Liver problems can take 48 to 72 hours to appear, which is why a vet visit is needed even if your dog looks fine.
Written from veterinary sources by the Pawsplained editorial team. Not yet reviewed by a veterinarian; this is general information, not a diagnosis or treatment plan. Updated Oct 30, 2026. Editorial policy