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Apple (seeds)
Malus spp.
Apples are widely consumed fleshy fruits that contain a central core housing several seeds (often referred to as pips or kernels). Like other plants in the Rosaceae family, the seeds of the apple naturally contain cyanogenic glycosides, specifically a compound known as amygdalin (HCN).
Potentially Toxic Parts
Seed
Possible Symptoms Reported in Cats
Difficulty Breathing and Hyperventilation
Respiratory · Rapid onset (often within minutes to a few hours).
Muscle Tremors, Incoordination, and Seizures
Neurological · Rapid onset.
Coma and Cardiac Arrest
Gastrointestinal · Rapidly following respiratory distress and seizures.
Cherry-Red Mucous Membranes
Hematological · Rapid onset.
Vomiting and Diarrhea
Gastrointestinal · Shortly after ingestion (often within 30 minutes to a few hours).
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.