What is the significance of a cat's bushy tail in terms of their behavior and communication?

A cat's bushy tail is a key indicator of their emotions and intentions. When a cat's tail is puffed up, it usually means they are feeling scared, threatened, or agitated. On the other hand, a relaxed and gently swaying tail indicates that the cat is feeling content and friendly. Therefore, a cat's bushy tail serves as an important form of communication, allowing them to express their feelings without using vocalizations.