This list is 10 of the more common houseplants found around pets and capable of causing potential problems. This does not mean this list includes the only toxic plants to animals because that is not the case. Many more poisonous plants are not on this list, baby breath being one of them. Baby breath is toxic to cats and will cause mild GI upset. If you receive a bouquet containing baby breath, it is best to throw it away before putting it into a vase to share a home with a cat. However, if you forget, do not get too worried because, more than likely, your pet will be okay but still consult your veterinarian for further guidance.