Is Star of Bethlehem Toxic to Dogs?
Also known as: Grass Lily, Nap-at-Noon, Dove’s Dung · Ornithogalum umbellatum
What makes it toxic
Cardiac glycosides (convallatoxin-type) in leaves, flowers and bulb. They disrupt the electrolyte pump that drives each heartbeat, producing the same poisoning pattern as lily-of-the-valley.
Warning signs to watch for
Vomiting and drooling first, then profound weakness, a slow or irregular heartbeat, cold extremities, tremors, seizures and possible sudden collapse.
What to do if your dog eats it
Drop everything and get the dog to a vet or emergency hospital — do not wait for heart signs. Bring a sample of the plant and say how much and when it was eaten.
Common questions
How fast do the heart signs appear?
Gut signs show within hours; dangerous heart rhythms can follow quickly. Early decontamination and ECG monitoring save lives, which is why waiting is the worst move.
My dog only chewed a leaf — is that serious?
Yes, assume it is. Cardiac glycosides act at small doses, so even a leaf chew deserves an immediate vet call.
Why is it in so many yards if it is deadly?
It spreads from old gardens as a hardy bulb. Pet owners should dig it out and dispose of the bulbs where pets cannot reach them.
More plants checked for dogs
This page is general educational information, not a substitute for professional veterinary advice. Every pet is different — if your animal ate something concerning, contact your veterinarian or a pet poison hotline right away. Checking what your pet can eat? Visit our sister site SafeOrToxic.