The signs of tulip toxicity in cats can manifest within a few hours of ingestion. Common symptoms include drooling, vomiting, diarrhea, lethargy, and loss of appetite. In severe cases, cats may experience difficulty breathing, are tulips toxic to cats increased heart rate, and even organ failure. Prompt veterinary attention is crucial if a cat is suspected of ingesting any part of a tulip plant, as early intervention can improve the chances of a positive outcome.