←
Sweet Pea
Lathyrus odoratus
Sweet Pea (Lathyrus odoratus) is a fragrant climbing flowering plant toxic to cats. It contains aminopropionitrile and related beta-aminopropionitrile compounds (lathyrogens) that cause a condition called lathyrism — affecting the nervous system and connective tissue. The seeds contain the highest concentration of these compounds.
Important Notes
Toxic compounds: aminopropionitrile (BAPN) and lathyrogen compounds; seeds most concentrated; stems and leaves also toxic
Mechanism: lathyrogens inhibit lysyl oxidase, an enzyme critical for collagen and elastin cross-linking; also cause direct nervous system toxicity (neurological lathyrism)
Symptoms: weakness, loss of coordination, paralysis, respiratory difficulty; also vomiting and lethargy
Sweet Pea is an ornamental plant — not related to edible garden peas (Pisum sativum)
Seek veterinary care if ingestion is suspected, especially if seeds were consumed
Potentially Toxic Parts
Stem
Entire Plant
Seed
Leaf
Flower
Possible Symptoms Reported in Cats
Dehydration
Metabolic · Not explicitly specified in the sources.
Seizures
Neurological · Not explicitly specified in the sources.
Vomiting and diarrhea
Gastrointestinal · Not explicitly specified in the sources.
Lethargy
Neurological · Not explicitly specified in the sources.
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.