Young people are basically in the confused period of entering the society, and everything is starting, but the pressure from all sides is constant, so they have a deep sense of humility and powerlessness. This situation is similar to the status of a dog. Since ancient times, dogs are inferior, and there is a record in the Book of Rites Quli that "women don't ride, dogs and horses don't work". Young people are mostly in the middle and lower classes of society, so naturally they feel humble like dogs and can't get on the table. Middle-aged and elderly people have different status, so they seldom call themselves dogs.
Apart from their similar status, young people also feel that their living conditions are similar to those of dogs. Dogs live a hard and lonely life, sometimes hard, sometimes lazy, sometimes entertaining themselves, much like young people, especially those who work hard in cities. For example, the semantics revealed by the postgraduate dog are: getting up early and going to bed late, endless exercise, putting an end to entertainment activities, full of employment anxiety and academic anxiety. In such a semantic environment, people add a dog word as a suffix to strengthen semantics and show that they live like dogs, which will wipe out the bitterness and fatigue of the postgraduate entrance examination.
Yalishan Mountain is big, but it is powerless to change. Young people can only laugh at themselves and blame themselves. In the book Personality and Humor, Israeli scholar Evna Ziff divides humor into five types according to its social function: offensive humor, sexual humor, social humor, intellectual humor and self-protection humor. For young people, the gap in today's society is getting bigger and bigger, and the pressures of study, work, marriage, raising a family and providing for the elderly are coming one after another. Faced with the chic and enterprising spirit of Hebai, a large number of young people feel that the road ahead is boundless and anxious. Calling yourself a dog is a kind of humor for self-protection and wisdom for self-liberation.
Claiming that dogs are a little bad, a little Macey, a little humorous and a little helpless, onlookers need not make a fuss. This is not only a release of social pressure and anxiety, but also a clever ridicule and resistance.
The above content is copied from Baidu for the main interpretation. I think it's mainly because dogs are loyal friends of human beings. Nowadays, dogs, as pets of many families, do not mean to belittle. They get up earlier than chickens and go to bed later than dogs, which is in line with the hardships of life.