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Heavenly Bamboo
Nandina spp.
Heavenly Bamboo (Nandina domestica) is a popular ornamental shrub that is toxic to cats despite its misleading name — it is not a true bamboo. All parts contain cyanogenic compounds, with the bright red berries carrying the highest concentration. When metabolised, these compounds release hydrogen cyanide (HCN), which disrupts cellular oxygen utilisation.
Important Notes
Toxic compounds: cyanogenic glycosides and isoquinoline alkaloids (nantenine) throughout the plant; berries most concentrated
Mechanism: cyanogenic compounds yield HCN on digestion, inhibiting cytochrome c oxidase and halting cellular respiration
Symptoms: vomiting, lethargy, weakness, difficulty breathing; severe ingestion may cause convulsions and collapse
The attractive red berries pose the greatest risk to curious cats
Seek veterinary care promptly if berry ingestion is suspected; HCN toxicity can progress rapidly
Potentially Toxic Parts
Leaf
Seed
Fruit
Possible Symptoms Reported in Cats
Seizures, Tremors, Ataxia (Incoordination), or Coma
Neurological · 10–60 minutes.
Hypotension (Low Blood Pressure), Arrhythmias (Irregular Heartbeat), and Sudden Collapse
Cardiac · 10–60 minutes.
Tachypnea (Rapid Breathing), Dyspnea (Difficulty Breathing), or Hyperventilation
Respiratory · 10–60 minutes after ingestion.
Bright Red Gums/Mucous Membranes
Hematological · 10–60 minutes.
Vomiting and Diarrhea
Gastrointestinal · 10–60 minutes.
Bitter Almond" Odor on Breath
Respiratory · Acute.
Disclaimer: This summary was compiled from multiple sources and is for informational use only. It is not a diagnosis or treatment plan. Toxicity can vary based on the substance, amount, plant part, and individual cat. If you think your cat may have been exposed to a toxic substance, contact a veterinarian right away.