Kalanchoe Safe For Dogs. According to the aspca this toxin can cause vomiting diarrhea and even an abnormal heart rate. In fact in south africa where the plant naturally occurs farmers occasionally lose livestock due to kalanchoe ingestion.
However its leaves contain a type of crystal called insoluble calcium oxalates which can be pretty irritating to the tissues. If ingested by dogs they would have a hard time swallowing mouth irritation and vomiting. This is makes this plant a good starter plant for beginner gardeners.
All parts of kalanchoe contain cardiac toxins referred to as cardenolides and bufadienolides.
However ingestion by dogs and cats most often results in gastrointestinal irritation or upset. If a large enough amount is ingested there may still be risk for more severe signs including changes in heart rate and rhythm weakness and collapse. However ingestion by dogs and cats most often results in gastrointestinal irritation or upset. Household pets are at a greater risk of kalanchoe toxicity as these plants are found in home gardens as common houseplants.