Sometimes the dog simply has no desire to train or play with you, and it is useless to try, using pressure, psychological or physical, to force it to train on a clearly designated day. In fact, it will not do any good, and will only be harmful. It is better to simply take this side of the animal’s nature for granted, and keep in mind that they have lived on this planet for thousands of years, which means that this side of nature is embedded in their blood and genes very deeply.