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.
dog safety reference
Is Mountain Laurel safe for dogs?
Kalmia latifolia
Mountain Laurel is a broadleaf evergreen shrub known for its clusters of showy, cup-shaped flowers. It contains grayanotoxins that are highly dangerous to pets if ingested.
Calico BushKalmia latifoliaLaurelSpoonwood
- Light
- Partial shade to full sun
- Habit
- Shrub
- Care
- Moderate
Safety status
What this means for your dog
Mountain Laurel is highly toxic to dogs, who are more likely than cats to chew on landscape shrubs and ingest a meaningful amount. The plant's grayanotoxins disrupt heart and skeletal muscle, so any suspected ingestion should be treated as an emergency.
What to watch for
Early: vomiting, profuse drooling, diarrhea, and weakness. Progressing signs: tremors, irregular heart rhythm, difficulty breathing, paralysis, or collapse.
Time window
Onset and duration are not given as specific numbers in the cited sources; clinical guidance treats grayanotoxin poisoning as time-critical.
When to call the vet
Call immediately — don't wait for symptoms to worsen. Grayanotoxin poisoning can progress to cardiac failure and death.
Sources: ASPCA, Pet Poison Helpline (no first-aid guidance).
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, paralysis, and potential heart failure.
Escalation note
This plant is considered highly toxic to dogs. Immediate veterinary intervention is required if any part of the plant is consumed.
Safer alternatives
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Source evidence
Questions about Mountain Laurel
Is Mountain Laurel toxic to dogs?
Yes, Mountain Laurel (Kalmia latifolia) is highly toxic to dogs. It contains grayanotoxins that can cause serious poisoning, and any ingestion — of leaves, flowers, or any other part — requires immediate veterinary attention.
What are the symptoms of Mountain Laurel poisoning in dogs?
Early signs include excessive drooling, vomiting, diarrhea, and weakness. As poisoning progresses, a dog may develop tremors, irregular heart rhythm, difficulty breathing, paralysis, or collapse. Grayanotoxin poisoning can advance to cardiac failure and death.
What should I do if my dog ate Mountain Laurel?
Call your veterinarian or the ASPCA Animal Poison Control Center at (888) 426-4435 immediately — do not wait for symptoms to appear. Grayanotoxin poisoning is time-critical and can progress to cardiac failure; prompt intervention is essential.
How quickly does Mountain Laurel poisoning progress in dogs?
Specific onset times are not documented in the clinical literature, but grayanotoxin poisoning is treated as a medical emergency because progression to irregular heart rhythm, paralysis, and cardiac failure can occur. Veterinary guidance treats any confirmed ingestion as time-critical regardless of how the dog appears at first.
Same dog verdict
Related plants for dogs
Azalea
Rhododendron spp
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.
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Barbados Pride
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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.
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Boxwood
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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.
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Castor Bean
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