Dogs
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.
Sources

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
Dogs
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.
Sources
Sheep laurel is a serious poisoning risk for dogs. Its grayanotoxins disrupt the sodium channels in heart and skeletal muscle, causing GI upset that can progress to arrhythmias, seizures, coma, and death. Curious dogs and puppies that browse on yard shrubs are the typical patients — treat any suspected ingestion as an emergency.
Early: heavy drooling, vomiting, and diarrhea. Then weakness, tremors, unsteady walking, slow or irregular heartbeat, and labored breathing. Severe cases progress to collapse, seizures, or coma.
Clinical signs develop within 1–4 hours of ingestion, occasionally as long as 12 hours. Cardiac and neurologic effects can persist for 24 hours or more and need in-hospital monitoring.
Call your vet or Pet Poison Helpline immediately for any suspected ingestion — do not wait to see if your dog "gets over it." Larger ingestions and small dogs need emergency care without delay.
Do not induce vomiting at home unless a vet or Pet Poison Helpline specifically directs you to. Remove any plant material from your dog's mouth, bag a sample to bring with you, and head to the vet now.
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.
Dogs — concern notes
Common signs
Excessive salivation, vomiting, diarrhea, weakness, difficulty breathing, and potential heart rate irregularities.
Escalation note
Ingestion can lead to severe systemic poisoning. Seek emergency veterinary care if your dog has consumed any part of this plant.
Safer alternatives
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ASPCA Toxic Plant List
toxicology · 99% reliability
Lambkill (Kalmia angustifolia) is listed as toxic to both cats and dogs due to grayanotoxins.
Same dog verdict

Azaleas are flowering shrubs in the Rhododendron genus that contain grayanotoxins, which can cause significant illness if ingested by pets. These plants are highly toxic and require immediate veterinary attention if consumption is suspected.
Potentially toxic for cats & dogs.

Barbados Pride is a flowering shrub known for its striking yellow flowers and long red stamens. It contains compounds that can cause gastrointestinal distress if ingested by pets.
Potentially toxic for cats & dogs.

Boxwood is a popular evergreen shrub often used for hedging and topiary, containing steroidal alkaloids that can cause gastrointestinal distress if ingested. It is considered toxic to both cats and dogs.
Potentially toxic for cats & dogs.

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Potentially toxic for cats & dogs.