All parts of fiddle leaf fig plants contain insoluble calcium oxalate crystals which are toxic to dogs, cats, and humans. If ingested, they can cause severe gastrointestinal upset and also irritate the soft tissues of the digestive system. Additionally, when handled without wearing gloves, the plant's calcium oxalate crystals can also burn and irritate the skin. Be careful to display your fiddle leaf fig in a location that's safe for pets and small children and always wear protective gloves when handling or repotting your plant.