In rural areas, almost every household will have a dog, which is not only a good friend of farmers, but also a good helper of family care. Farmers don't care about the value of dog breeds, as long as they can take good care of their homes and protect them from thieves, so most dogs in rural areas are local dogs. In recent years, some vendors often come to the countryside to buy old dogs. It is puzzling that the older the dog, the higher the purchase price. So how did these manufacturers take them away?

For this problem, many people may say eating meat, especially now that the weather is getting colder and colder, eating a bowl of dog meat will immediately warm up. Actually, it's not, because when these vendors collect dogs, they don't collect big and heavy dogs, but specialize in collecting some old and thin dogs. The purpose of collecting this kind of dog is obviously not as simple as eating meat. For the purpose of these vendors to collect dogs, the experienced old people in the village gave the answer: pick up the leak!

The old people in the village all said that when local dogs reach a certain age, they may have treasures like "Goubao". Goubao is a traditional medicine, which is very rare. In Pharmacopoeia such as Compendium of Materia Medica, there are records of dog treasures. At present, the price of dog treasure is as high as several thousand clouds per gram, and the size of dog treasure is also large and the price is expensive. Once, a dog's baby was auctioned for millions.

Dog treasure is a stone-like thing that grows in a dog's stomach. Oval or round, with a diameter of1-5cm. Its surface is grayish white, and its texture is hard but delicate. If you scratch it with your nails, you can see the scratches. Its cross section is white or ivory, and it is also called "three treasures" with Niuhuang and Ma Bao.

According to people's statistics, 9%- 10% of dogs have dog treasures, but because dog treasures grow in the belly of dogs, we will never find out which dog has dog treasures. The reason why vendors come to the countryside to buy local old dogs is that dog treasures are gradually formed. That is to say, the older the dog, the greater the possibility of having dog treasures in his body, and the bigger and more valuable the dog treasures are. When a dog has treasure in his stomach, his hair will be messy, fluffy and dull, and even lose a lot, his eyes will be dull and his body will be weak. This is also the reason why these vendors have a soft spot for those thin old dogs in rural areas and will spend high prices to "pick up the leaks".