Why do you say that? This is a good start: 12 in the zodiac, there is a dog without a cat, the dog is in autumn, in the gossip position, in the northeast. As we all know, the northeast is an auspicious location, so divination is auspicious, just like dog divination.
Moreover, flying stars are broken stars, and Wu Quxing divines western gold, while the concept of Huang Kim Jae Jung people is wealth, so there are dogs in the folk to make money.
In addition, the dog barks "Wang, Wang", and the people take its auspicious meaning and like dogs;