"The wolf travels thousands of miles to eat meat, and the dog travels thousands of miles to eat shit?" Why can't dogs eat poop instead?

There are several common sayings that describe an interesting (if not interesting) phenomenon, such as "a dog can't change its mind and eat shit", such as "a wolf travels thousands of miles to eat meat, and a dog travels thousands of miles to eat shit". Because there will be a lot of slightly uncomfortable words in the whole article, we use "feces" instead. Hey, isn't it so uncomfortable? Generally speaking, it is a normal physiological behavior for dogs to eat feces. For example, the bitch will lick the child's anus and eat the feces after excretion, so as to prevent other animals from preying on weaned puppies by smell. If an adult dog feels threatened, it may also eat feces to eliminate its own traces. Some owners blame or punish dogs after urinating everywhere, and dogs eat their own feces to avoid being discovered by their owners; In addition, when people see a dog eating feces, they often exclaim and ask others to look at it, which makes the dog have a high-profile feeling, so when it wants to attract the attention of its owner, it may choose this way; Some dogs are used to eating two or three meals a day, and suddenly they change to one meal a day for reasons such as changing owners, so dogs will eat feces to relieve hunger. After login/registration, you can see the undigested and completely absorbed nutrients in the feces, which is also a great temptation for dogs. For example, the feces of herbivores often contain some vitamins and trace elements that dogs lack, and dogs will supplement nutrition by swallowing feces. "Without the smell of shit, there is no taste of rice." Animal manure consists of food residues, digestive juice, intestinal exfoliated cells, microorganisms and so on. , and contains various nutrients. It has been regarded as a valuable farmland fertilizer for thousands of years, and it is known as the saying that "fat water does not flow out of the field". The feces of common animals such as chickens, cows, pigs and rabbits contain protein, cellulose, fat, calcium, phosphorus and various amino acids, as well as vitamin A, vitamin B, vitamin K, linoleic acid and other essential nutrients. In the animal room of our laboratory, dogs only eat the poop of themselves and other dogs, or rabbits, and are not interested in mice. Although eating feces is no longer necessary for survival as the nutritional ratio of dog food becomes more and more balanced and reasonable, many pet dogs still maintain the frugal habits of their ancestors. In addition, some diseases will also aggravate the dog's appetite for feces. Such as pancreatitis, gastrointestinal parasites, intestinal flora imbalance, diabetes and so on. And the application of some drugs such as barbiturates, lutein and steroids can also lead to this result. However, from the discussion of pet forums at home and abroad, nutritional deficiency and being punished for defecation as a child should be the main reasons for raising dogs to eat feces. It's not just dogs that eat poop. "Wolves travel thousands of miles to eat meat, and dogs travel thousands of miles to eat shit." This statement is actually wrong. Not only wolves, but also foxes, coyotes and jackals in canines eat a small amount of feces. Even jackals and other groups will attack the buttocks of large herbivores when hunting, grab the intestines of prey from the anus and bite them off, and eat them together with the feces in the intestines. After logging in/registering, you can see the big picture. In fact, many animals in nature eat feces. Needless to say, dung beetles, flies and other insects that eat the feces of large mammals all the year round. Termites will feed on the feces of queen ants to maintain the balance of intestinal flora. Similarly, elephants, pandas, koalas, hippos and other animals will eat their mothers' feces to supplement intestinal microorganisms at an early age. Dogs are not the only animals that make full use of unabsorbed nutrients in feces. Pigs will eat the feces of themselves and other animals to absorb nutrients that are not fully digested. Many herders feed cows with chicken manure containing a lot of protein, and the price is cheap. South American capybara, hamster, chinchilla, guinea pig, gorilla and chimpanzee will "hunt down" the nutrients that escaped from the net during the first digestion and absorption by eating their own feces. Many people who have raised rabbits have also noticed that rabbits will excrete a wet and soft dung ball, and most rabbits will eat this dung at the first time. This is because rabbits are monogastric herbivores and have no rumen like cattle to "feed" microorganisms to help digestion. After long-term evolution, rabbits have a developed cecum, which functions like rumen. Food is decomposed by microorganisms in the cecum, converted into absorbable nutrients, and then discharged in the form of "cecal feces". Rabbits get nutrition by eating cecal feces. So most rabbits and hares have eaten dung since childhood. Therefore, eating feces is not only the nature of dogs, but also the "nature" of many animals and even humans. It is not without eating feces, from yellow sand, nocturnal emission sand, full moon sand, white clove, trogopterori and chicken white. Although dogs do eat feces, it is wrong to say that "dogs can't change and eat shit", and they can all be domesticated from wolves to dogs (although wolves and dogs are still the same species in biology). Of course, they can be trained not to eat feces. You can see the big picture after registering. Although eating feces is a dog's nature, it is unsightly after all, and dogs eating feces from other dogs or other animals may cause the spread of parasitic eggs or infectious diseases. Therefore, in addition to regular deworming and vaccination, it is also necessary to train domestic dogs to get rid of the habit of eating feces. First of all, the owner should clean up the feces in the dog's living environment in time, and don't be too hasty when cleaning up, lest the dog mistakenly think that the feces are precious treasures or think that it is eaten first for the game of feces. When it is impossible to clean up the feces in time, you can choose to put the dog in a cage, and the gap at the bottom of the cage should be wide enough so that the feces can fall out of the cage smoothly. Wear a mask when walking the dog to prevent the dog from eating feces. Secondly, it is necessary to provide dogs with a scientific and reasonable diet and feed them regularly and quantitatively to prevent dogs from eating feces because of hunger or lack of certain nutrition. We can also choose dog food on the market to prevent eating feces. Some substances are added to this dog food, which will produce an unpleasant smell after digestion, so that dogs will no longer eat feces. Finally, when the dog excretes, use food to lure the dog away from the feces, or send instructions such as "sit down", "come here" and "don't move" to the trained dog. If the dog smells feces, stop. After a period of training, dogs will gradually get rid of the habit of eating feces. If the dog can't solve the problem of eating feces after trying the above methods, please take it to an animal hospital to check whether there are internal diseases and correct the dog's bad habits according to the advice of professionals.