All parts of the sago palm, especially the seeds, are highly toxic to pets. Ingestion can lead to severe liver damage and even death.
Certain types of lilies, such as Easter lilies, tiger lilies, and daylilies, are toxic to cats. Ingestion can cause kidney failure.
The autumn crocus contains colchicine, which can be fatal to pets if ingested. Symptoms may include vomiting, diarrhea, and respiratory failure.
Azaleas contain toxins that can cause vomiting, diarrhea, drooling, and potentially more severe symptoms in pets.
Oleander is highly toxic to pets, affecting the heart and gastrointestinal system. Ingestion can lead to severe illness or death.
The seeds of the castor bean plant contain ricin, a toxic substance that can cause abdominal pain, vomiting, and other symptoms in pets.