The movement of a dog's tail is also a "language" and an expression of the dog.

Although the tails of different breeds of dogs vary in size and shape, the movements of their tails express roughly similar meanings. Although Schnauzer dogs have shorter tails, they express the same meaning as other dogs.

1. The specific meaning of a dog’s tail wagging. Generally, when the dog sees its owner happy or excited, the dog will wag its tail. The tail not only sways from side to side, but also keeps turning.

In addition, if the tail droops, it means danger; if the tail is raised, it means joy; if the tail is tucked, it means fear; if the tail does not move, it means uneasiness; if the tail shakes quickly and horizontally, it symbolizes friendliness.

2. The movement of the dog's tail is also related to the tone of the dog owner. The movement of the dog's tail is also related to the tone of the dog owner. If the dog owner says to it in a friendly voice, "Bad guy! Bad guy!", the dog will also wag its tail to express happiness. .

On the contrary, if the dog owner says "Good dog! Good dog!" in a stern voice, the dog will still tuck its tail to express displeasure. In other words, for dogs, the sound of human speech is only a sound source, not a language.

3. The activity of a dog’s tail is closely related to the sense of smell and special anal glands. Sometimes, the activity of a dog’s tail is closely related to the sense of smell and special anal glands. Anal glands give each dog its own unique scent.

An excited dog will wag its tail to spread the scent; a frightened dog will cover up its anal glands and no longer emit scent. Generally speaking, the frequency of a dog's tail wagging can reflect the degree of excitement and health: the faster the wagging, the more excited and healthy the dog is; the slower the wagging, the more excited it is but unhealthy.