What do you mean by Greyhound, yellow dog and black mouth?

Hunters As the old saying goes: black dogs are accurate, green dogs are ruthless, and raccoon dogs are smart and yellow dogs are stable. There are several kinds of black, flashing red and fur are black, flashing gray is cao black, white claws send charcoal black, white chest blind man black, (like a bear with white fur on its chest) white legs black spots leopard black. There are several kinds of green, flashing black is called iron green, flashing white is called wolf green, flashing red is called fire blue, and green above is called horse dung green below. Bai Qing's real name is Xiliha, and he has a bat on his forehead. (In Xiliha Manchu language, the greenest color is the lightest, and the four legs are white; but there is a dark bat pattern on the forehead, which is the best choice among green dogs) The iron-backed gray wolf is really good, and it has been called dark cloud cover since ancient times. It is rare for a green dog to be like a white-faced wolf, and a badger will surely suffer disaster if he sees it. Green dogs are most afraid of black mouths, and trying to show off will only frighten the dog. The raccoon dog is also called Hushidou (er), and its true colors must be revealed. There are several kinds of raccoons, the yellow ones are called fire raccoons, the green raccoon ones are called green raccoons, and the ones that flash green are called mud raccoons. (There is white in the light gray, not really black and white like a zebra) There are several kinds of yellow, light yellow is grass yellow, dark yellow is tangy yellow, (tan means dark color, rich color) Yellow is neither dark nor light, yellow A dog with a fair face can never be exchanged for gold, but on the eighth day of the lunar month, people are competing to see the dog. (The eighth day of the first lunar month is dog drying day, and all the family members come out to walk their dogs to show off.) Three pieces of yellow, four pieces of black, and bits of leopard flowers are flying all over the body. Blue and white civet flowers are so rare that they won’t let go of anyone they meet. Glasses, partial hair, and bun flowers. (There are colored hairs around the eyes, as if wearing glasses; a partial face has a yin and yang face, with flowers on half of the face; a bun means there are flowers on the ears, and it is best to have flowers at the base of the ears, like a child's double bun) There are celebrities competing for praise on the spectrum. He was so surprised that he was all purple, Master Chitu thought so. It's rare that his fur is all black, and his chinchilla fur coat is turned upside down. (Greyhounds are very rare, and short-haired ones are considered authentic.) Among all the white dogs, Gaigai is the first one with all kinds of fur. A dung beetle has a nose, and a white dog with a black nose is awesome. It's a pity to have a purple nose or a red nose, so it's not surprising that it's not considered a white dog. As long as you memorize the ancient music by heart, you don't have to worry about getting a good dog. In spring and autumn (children) bite badgers and hang them in teahouses to cheer. There were three levels of people watching inside and outside, and they were both energetic and happy