Is Kalanchoe Toxic to Cats?
Also known as: Flaming Katy, Christmas Kalanchoe, Widow’s Thrill, Mother of Millions relative · Kalanchoe blossfeldiana
What makes it toxic
Bufadienolide cardiac glycosides throughout the plant, concentrated in flowers. Like foxglove, they disrupt the heart’s electrical conduction.
Warning signs to watch for
Drooling, vomiting and diarrhea first; larger doses progress to weakness, abnormal heart rate or rhythm, collapse and, rarely, death.
What to do if your cat eats it
Remove material, note the amount and part eaten, and call your vet promptly. Any weakness, wobbliness or odd heartbeat is an immediate ER situation.
Common questions
Can kalanchoe kill a cat?
It can in significant exposures because of its cardiac glycosides, though most nibbles cause only GI illness. Every exposure deserves a vet call.
Are the flowers more toxic than the leaves?
Yes — blooms hold the highest glycoside concentration, and they are the most likely part to be chewed on a gift plant.
Is mother of millions related and worse?
Yes — Kalanchoe delagoensis and relatives are more potent and invasive. All Kalanchoe species should be kept from cats.
More plants checked for cats
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.