Yes, cyclamen plants (genus Cyclamen) are toxic to both cats and dogs. The primary toxic compounds are triterpenoid saponins, with the highest concentration found in the tuberous root (corm). These saponins are naturally occurring chemicals produced by the plant as a defense mechanism against herbivores, fungi, and microbes. When ingested by a pet, these irritant saponins can cause significant gastrointestinal distress and, in the case of large ingestions of the corm, more severe systemic effects.
Cyclamen are popular flowering houseplants and garden perennials known for their upswept petals and heart-shaped, often variegated leaves. The most toxic part of the plant is the underground corm, which can be mistaken by a digging dog for a root vegetable. However, all parts of the plant contain the irritating saponins to varying degrees. The leaves and stems pose a risk if chewed or ingested, and even the water from the vase of cut cyclamen flowers can contain dissolved toxins.
The severity of symptoms depends on the amount ingested and the part of the plant consumed. Chewing on a few leaves may only cause mild symptoms, while digging up and eating the corm can lead to a severe, potentially life-threatening reaction. Common symptoms include excessive drooling (a direct result of the saponins irritating the oral mucosa), vomiting, and diarrhea. With significant ingestions, particularly of the corm, symptoms can progress to include abnormal heart rhythm (arrhythmias), seizures, and even death.
If you suspect your cat or dog has ingested any part of a cyclamen plant, immediate action is crucial. First, remove any plant material from your pet's mouth. Identify the plant and try to estimate how much was consumed. Contact your veterinarian or an animal poison control center immediately for professional advice. Do not induce vomiting unless specifically instructed to do so by a veterinarian, as this can sometimes cause additional harm.
For households with curious pets, choosing non-toxic plant alternatives is the safest strategy. Many beautiful and pet-safe plants can provide greenery and flowers without the risk. Excellent non-toxic options include African Violets (Saintpaulia), Spider Plants (Chlorophytum comosum), certain Calathea and Maranta species (Prayer Plants), Boston Ferns (Nephrolepis exaltata), and most orchids (Phalaenopsis and others). Always verify a plant's toxicity with a reliable source, such as the ASPCA's toxic and non-toxic plant list, before bringing it into a home with pets.