Why does the cat's tail keep wagging?
From a physiological point of view, the movement of cats' tails is controlled by the central nervous system of their brains. The brain sends signals through the central nervous system to the muscles in the tail, which stimulate the muscles to contract. So a cat's tail moves autonomously. When a cat moves their tail, they do so after much thought.
But the cat's biggest enemy is the tail itself. You will find that cats often walk and get scared by their own tails and then bite their own tails. You're thinking about that do they really know they have tails? Do they use the tail as their cat toy? The neuronal activity in the cat's tail is mainly controlled by the spinal cord, segmental reflex activity, and the basic form is unconditioned reflex. Non-conditioned reflex is an instinct, it is born, and it does not need to be controlled by the central nervous system of the brain.
This is like your finger. When your finger touches the flame, it will instinctively withdraw your hand without thinking. At this time, the nerve conditioning of the finger is prior to the brain, and when you feel pain, this time neurons are transmitted to the brain. The cat's tail is also the same structure, so the cat has not realized to move the tail, the tail will sometimes shake the conditioned reflex, and then start the cat, and the cat will bite the tail. At this time, the cat may not realize that this is a tail, and it may be regarded as something like cat supplies.
The cat's tail has many functions. In addition to acting as a balance when the cat falls from a height, it also has a communication function. For example, when the tail is up, it expresses happiness. On the contrary, when the tail is down, it expresses dissatisfaction. Isn't this a special cat toy?