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Plums
Plums
Plum flesh (Prunus domestica) is not toxic to cats in small amounts, but the pit, stems, and leaves contain amygdalin — a cyanogenic glycoside that releases hydrogen cyanide (HCN) when chewed. This is the same mechanism as apricot and peach pit toxicity. The flesh alone, offered without the pit, is safe as an occasional tiny treat.
Important Notes
Pit, stems, and leaves: toxic — amygdalin yields HCN via beta-glucosidase cleavage
Mechanism: HCN inhibits cytochrome c oxidase, halting cellular respiration
Symptoms from pit ingestion: rapid breathing, weakness, drooling, vomiting; severe cases cause seizures and respiratory failure
Ripe flesh: safe in very small amounts, but offers no nutritional benefit and is high in sugar
Always remove the pit completely before offering any fruit; avoid dried plums (prunes) as high fibre causes diarrhea
Potentially Toxic Parts
Pit
Stem
Peel
Skin
Seed
Leaf
Flesh
Fruit
Possible Symptoms Reported in Cats
Difficulty Breathing and Hyperventilation
Respiratory · Rapid onset (often within minutes to a few hours).
Systemic Shock and Coma
Gastrointestinal · Rapidly following initial respiratory distress.
Vomiting, Diarrhea, and Abdominal Pain
Gastrointestinal · Shortly after ingestion (often within a few hours).
Trouble Walking and Mental Confusion
Neurological · Rapid onset.
Cherry-Red Skin or Mucous Membranes
Dermal · Rapid onset.
Gastrointestinal or Throat Obstruction
Gastrointestinal · Immediate (if causing choking) or variable (can take hours to days if lodged further down in the int
The symptoms a cat shows after ingesting or being exposed to plums, particularly the toxic pits
Metabolic
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.