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Lantana
Lantana camara
Lantana (Lantana camara) is a colourful flowering shrub that is severely toxic to cats. All parts — particularly the unripe green berries — contain lantadene A and lantadene B, pentacyclic triterpenoid compounds that cause liver damage and bile duct obstruction. Lantana poisoning is well-documented in livestock and companion animals and can be fatal.
Important Notes
Toxic compounds: lantadene A and lantadene B (pentacyclic triterpenoids); unripe green berries most concentrated; leaves and stems also toxic
Mechanism: lantadenes cause hepatocellular necrosis and phylloerythrin accumulation in bile ducts, leading to photosensitisation and liver failure
Symptoms: severe vomiting, diarrhea, weakness, jaundice (yellowing of gums and eyes), photosensitive skin lesions, liver failure; may be fatal
The attractive berries (which change from green to red/black as they ripen) are especially dangerous
Any suspected ingestion is a veterinary emergency — do not wait for jaundice or liver symptoms to appear
Potentially Toxic Parts
Leaf
Flower
Fruit
Possible Symptoms Reported in Cats
Liver Failure
Hepatic · Delayed (typically occurs after the initial gastrointestinal signs).
Vomiting and Diarrhea
Gastrointestinal · Not specified in the provided sources.
Labored Breathing (Dyspnea)
Respiratory · Not specified in the provided sources.
Weakness / Lethargy
Neurological · Not specified in the provided 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.