Otherwise known as Elephant’s Ear, this plant can irritate or burn the mouth, lips or tongue of cats and dogs.These pretty flowers cause symptoms like stomach pain, drooling, tremors, diarrhea, and vomiting in cats and dogs when ingested.This is a common bedding plant in larger planters, but it contains insoluble calcium oxalates, which cause burning of the mouth, tongue.This is one that you should avoid because the cycasin in these plants can cause several serious issues such as hemorrhagic gastroenteritis or liver failure.This is a beautiful flowering plant similar to amaryllis, but the alkaloids it contains can cause symptoms ranging from vomiting and diarrhea to low blood pressure and arrhythmia in both dogs and cats.You may be tempted to move your gorgeous potted mums indoors when the weather gets colder, but they’re toxic to cats, dogs (and horses) when ingested.Toxic oxalates and proteolytic enzymes cause oral burns, drooling, and vomiting.Its toxic mechanisms are unknown, but in cats, Easter lilies cause vomiting, or in severe cases, kidney failure.Dogs and cats will experience stomach pain, drooling, vomiting and diarrhea due to saponins.These lovely flowers are common both outdoors and as house plants, but two chemicals that they contain, geraniol and linalool, can cause dermatitis, vomiting, and anorexia in dogs and cats.Hyacinths are known to be toxic to dogs and cats, causing tremors, severe vomiting and diarrhea in which blood is sometimes present.This small indoor tree contains ficin and ficusin, which causes a loss of coordination, vomiting, dermatitis and oral irritation.These plants have beautiful flowers, but they also contain bufadienolides, which cause gastrointestinal symptoms like vomiting and diarrhea in pets.Pentacyclic triterpenoids in the leaves cause labored breathing, weakness, and sometimes vomiting and diarrhea.If ingested, calcium oxalates in this plant cause cats to suffer oral symptoms: burning, drooling, difficulty swallowing, and more.The bulbs are poisonous, causing oral irritation, stomach pain, nausea, vomiting, and potential liver damage in pets.All varieties of philodendron contain oxalate crystals, which burns the mouths of dogs and cats and can also cause excess salivation or trouble swallowing.While ingesting poinsettia isn’t normally deadly to pets, it can cause irritation in the mouth or stomach, which leads to vomiting and diarrhea.While these plants are considered non-toxic, the compounds in them, which are related to opium, can result in an upset stomach, vomiting, and diarrhea in cats.These evergreens are sometimes used to create indoor bonsai trees or Christmas decorations, but they contain taxine, which is highly toxic to cats and dogs.We’ve listed some of the most common toxic houseplants here, but before you bring any plant into your home, make sure that you check with your vet or online here to see if it is pet-safe!