When a kitten purrs, it is generally a sign of contentment and happiness. A newborn kitten will purr to tell their mother that theyre comfortable and secure, and a clever kitten will use purring to get more than their share of stroking. Purring can also be a sign of affection or a way to bond with their human companions. Additionally, cats might purr in very stressful situations as a way to calm themselves down. Kittens can also purr to let their mothers know where they are or that theyre okay. While purring is most commonly associated with an expression of cat happiness, cats can also purr when theyre in pain, anxious, or stressed. The circumstances around a purr can help interpret what a cat is trying to communicate.