Cats
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.

Kalmia angustifolia
Lambkill is a flowering evergreen shrub in the heath family known for containing grayanotoxins. Ingestion of any part of the plant can cause significant health issues in pets.
Safety status
Cats
Potentially toxicConsulted references classify the plant as toxic or irritating for that pet type.
Verified against ASPCA/provenance audit 2026-05-06 on May 6, 2026.
Sheep laurel is dangerous for cats. Every part of the plant carries grayanotoxins, which interfere with the sodium channels in heart and skeletal muscle. Cats chew very little of it, but even a few leaves can produce GI signs and, in larger doses, dangerous heart-rhythm changes — this is a same-hour vet call, not a watch-and-wait.
Early signs are drooling, vomiting, and diarrhea. As the toxin takes hold, watch for weakness, tremors, an unsteady gait, slowed or irregular heartbeat, and difficulty breathing. Severely affected cats can collapse.
Signs typically develop within 1–4 hours of ingestion, and occasionally as long as 12 hours. Serious cases require hospital care and can take days to fully resolve.
Call your vet or a poison control center immediately on any suspected ingestion — don't wait for symptoms. Sheep laurel is a high-toxicity exposure for cats and supportive care started early matters.
Do not induce vomiting at home — Pet Poison Helpline specifically warns against that for cats. Remove any remaining plant material from your cat's mouth and surroundings, bag a sample to take with you, and head to the vet.
Sources: ASPCA, Pet Poison Helpline.
If a pet has chewed or swallowed plant material and is showing symptoms, contact a veterinarian or poison resource immediately. This product is for structured reference, not diagnosis.
Cats — concern notes
Common signs
Drooling, vomiting, diarrhea, loss of appetite, abdominal pain, tremors, and potential cardiac arrhythmias.
Escalation note
This plant is highly toxic. If ingestion is suspected, contact your veterinarian or an animal poison control center immediately.
Safer alternatives
No hand-picked alternatives for this plant yet. You can still pick your own using the Compare button on any other plant.
NC State Extension Plant Toolbox
botanical · 94% reliability
Kalmia angustifolia is a native evergreen shrub that is poisonous to livestock and pets if ingested.
Same cat verdict

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