Purrfecting the art of purring She does exactly that our dear imaginative and near perfect pet cat We notice that each time she wants something the volume and tone of her purr changes to reflect her sense of urgency The higher the pitch the greater is her need to spur us into action to provide her with the object of her desire A piece of fish generally exacts the highest decibel purr Its flavor drives her almost crazy The purr frequency is lower for a saucer of milk or water So the greater the urgency the less pleasing the purr!!