Why do cat tail twitches occur and what do they indicate about a cat's behavior or mood?

Cat tail twitches occur as a way for cats to communicate their emotions and intentions. A cat's tail twitching can indicate various things about their behavior or mood, such as excitement, agitation, or readiness to pounce. It is important to pay attention to the context and other body language cues to understand what a cat's tail twitches may be signaling.