Because in the future the dog will have to accompany its blind master into many different kinds of venues, it must learn that it can never relieve itself on manmade materials like marble, brick, and the like. The best solution is to teach the dog to only relieve itself when it is on a patch of grass.
因為導盲犬日後要跟著主人進出各種場合，絕不能在大理石、磁磚等人造建材上大小便，最好的方法就是確保牠養成「看到草地才上廁所」的習慣。