Strong adaptability, can adapt to various changes in the external environment. Fifth, it can resist the common cold and infectious diseases. Sixth, the weight is appropriate, the body is symmetrical, and the position of the head, shoulders and buttocks is coordinated when standing. Seventh, the eyes are bright, the reaction is keen, and the eyelids are not inflamed. Eighth, the teeth are clean, there is no tooth decay, no pain, and there is no bleeding in the gum color. Nine is that the hair is shiny and there is no dandruff. Ten is full muscles and elastic skin.