Cats can use vocal-like Meow and purr-to tell us what they want, like or don't like. But most of their communication is based on body language a lot of that is done through their tails.The primary purpose of Your cat's tail is balance-it helps when walking out on the limbs, and more importantly, it helped him flip in the air to land on his feet should he fall from the legs. But pet cats we use their tails to communicate with people and other cats, send a message with their tail based on the position and shape.
The position that is most familiar to us is the greetings "straight-up". "the tail is vertical like a pencil, and You usually see it when Your cat is happy to see You. If the tip of Your cat's tail is a bit crooked, it means He is pleased.
A straight tail with a fur-lined shows the opposite meaning: Your cat feels threatened. Usually, when Your cat is in this mode, he will stand on the side of the perpetrator, back arched, to appear as big as possible.
A cat often uses her tail to communicate the intention to avoid conflict. A cat will demonstrate that he no longer like a swan slowly from the tail-it is the first warning. If there are unwanted circumstances, Your cat can beat You with the front legs or get up and go.
When Your cat is very agitated, he will whip his tail quickly and can accompany a low growl. When stalking prey-real or toy-Your cat's tail will be straight out, nervous or shaking. It is usually seen when the entire body of the cat is a spring-loaded, in the position of the pre-TOS — the smooth movement of the tail to communicate its intention to the other cats without alerting their prey.