When does a dog wag its tail?

A dog with rich emotions, the only tool used to convey inner thoughts, is its tail. Based on the tail, we can understand the psychological and dangerous state of dogs.

For example, when a dog encounters a favorite opposite sex, its tail will stand at a right angle and vibrate slightly. When angry, the tail will droop. When happy, the tail will swing significantly to the left and right. When in fear, roll your tail under your belly, as the saying goes, you run away with your tail between your legs. When a typical dog is in good physical condition, its tail is usually tightly coiled; Once sick, it droops loosely.

The tail of a dog is so important, why do some dog breeds suffer from the hatred of losing their tail? For example, Schnauzer. At least 30% or more of the light snow will have its tail cut off. In fact, this is very bad: a dog’s tail has about twenty tail vertebrae, surrounded by six thick blood vessels, and countless nerve fibers distributed, directly connected to the brain through the spine. Therefore, the sensation of the brain is completely transmitted to the tail and exposed.
Is it too painful for a dog to cut its tail purely for the sake of appearance or lightweight reasons (such as participating in competitions)?