Sago Palm

ASPCA confirms Toxic to Dogs, Toxic to Cats, and Toxic to Horses. Toxic principle: cycasin. ASPCA lists clinical signs including vomiting, melena, jaundice, increased thirst, hemorrhagic gastroenteritis, bruising, coagulopathy, liver damage, liver failure, and death. This is a high-severity toxicity profile: organ failure and death are named outcomes, not worst-case rarities: and should be flagged prominently in the app, not treated like a routine mild-GI-upset entry. NC State Extension independently corroborates severity, stating that all plant parts contain cycasin with the highest concentration in the seeds, and that ingestion of any part may cause permanent internal damage or death, including vomiting, diarrhea, weakness, seizures, and liver failure. UF/IFAS's consumer-facing fact sheet also warns in plain language that the plant contains a powerful neurotoxin that can cause paralysis or even death if not prepared properly, and that the seeds can also be poisonous to humans and animals if ingested: note this source frames it partly as a food-preparation hazard (sago starch is traditionally detoxified before human consumption in some cultures), a different framing from pure ornamental-plant toxicity but pointing at the same underlying toxin. Note: this ASPCA entry also covers Cardboard Palm and Coontie Palm under the same toxic verdict (see the look-alike warning above).