Bog Laurel

Yes, bog laurel (Kalmia poliifolia) is highly toxic to cats. It contains grayanotoxins — the same class of toxins found in mountain laurel and rhododendron — and even small amounts can cause severe systemic illness including cardiac arrhythmias.

Early signs are gastrointestinal: drooling, vomiting, diarrhea, abdominal pain, and loss of appetite. As toxicity progresses, watch for tremors, weakness, an irregular pulse, extreme lethargy, or collapse — grayanotoxins disrupt skeletal muscle, cardiac muscle, and nerve function, so cardiac failure is the worst-case outcome.

Remove any plant material from your cat's mouth and call the ASPCA Animal Poison Control Center at (888) 426-4435 or Pet Poison Helpline at (855) 764-7661 immediately. Do not induce vomiting at home unless poison control or your vet explicitly instructs you to.

Yes — call immediately on any known ingestion and don't wait for symptoms to appear. Bog laurel's grayanotoxins can affect the heart, and the cardiac risk makes every ingestion time-sensitive regardless of how your cat looks in the first few minutes. Reach the ASPCA Animal Poison Control Center at (888) 426-4435.

Yes, Bog Laurel (Kalmia poliifolia) is highly toxic to dogs. It contains potent grayanotoxins that affect cardiac and skeletal muscle, and ingestion of any part of the plant is considered a medical emergency requiring immediate veterinary care.

Early signs typically appear within 1–4 hours of ingestion and include heavy drooling and vomiting, followed by diarrhea, lethargy, and unsteady walking. Larger ingestions can cause tremors, a slow or irregular heartbeat, weakness, and laboured breathing — these are signs of serious grayanotoxin poisoning.

Remove any remaining plant material from your dog's mouth and bag a sample to bring to the vet. Do not induce vomiting at home — grayanotoxin cases benefit from controlled veterinary decontamination, ideally within 2 hours. Call ASPCA Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661) immediately and head to a clinic without waiting for symptoms.

Clinical signs typically develop within 1–4 hours of ingestion, though onset can be delayed up to 12 hours in some cases. Even a few leaves pose a serious risk to small dogs, and severe cases may require 24–48 hours of in-hospital monitoring; do not wait for symptoms before calling a vet.