Birds of Paradise plants are mildly to moderately toxic to cats. The plant's seeds contain tannins that can interfere with protein digestion and metabolism, and the leaves contain hydrocyanic acid, which is poisonous and interferes with the body's use of oxygen. If a cat ingests parts of the Bird of Paradise plant, symptoms may include digestive issues, trouble breathing, nausea, vomiting, diarrhea, drowsiness, and eye discharge. Although the toxicity is generally mild, it is still recommended to keep these plants out of reach of cats and seek veterinary attention if ingestion occurs. These plants are listed as toxic by the ASPCA and other veterinary sources.