There is a folk saying that "black dogs and black cats are messengers of communication between Yin and Yang". This is because black dogs are pure yang, pure yin and pure spirit. Black dogs can be said to be the body of yin and yang, so ghosts are afraid of black male dogs, their blood and their teeth. Therefore, many people think that black dogs have the function of exorcism.

Brief introduction of black dog

The black dog is the incarnation of the dog. The black dog can see the dirty things that humans can't see, and it can feel the surrounding environment. If its magical eyes see something unclean, it will chase after it, so the dirty things are afraid of the black dog, and they dare not approach it when they see it, and dare not approach it again. Dogs are human animals and good friends. Black dogs are gods and evil spirits, which can protect human beings, so black dogs are good friends of human beings.

Dogs are domesticated by wolves. As early as the era of hunting and gathering, people have domesticated dogs as hunting assistants. So dogs are the earliest domesticated domestic animals. Dog bones have been found in Cishan, Wu 'an, Hebei, Peiligang, Xinzheng, Henan, Hemudu, Yuyao, Zhejiang, which proves that it has a long history of domestication. The dog shape unearthed from Sanlihe River in Jiaoxian County, Shandong Province is lifelike, which makes us see the morphological characteristics of domestic dogs in Neolithic Age.