It is normal for cats to have a fast heartbeat. Generally, cats will have a fast heartbeat when exercising vigorously, being frightened, or in hot weather. It will slowly return to normal after a few minutes. However, owners should pay attention to the cat's condition. Sometimes the cat's body Suffering from diseases can also cause the heartbeat to accelerate. When the owner finds any abnormality, he should take the cat to the pet hospital for examination and treatment in time.