Huikuang Guide Dog Centre manager Hsu Ya-chuan says that the most common problem at foster families is the failure to teach the dog to wait to go out before it defecates or urinates.
惠光導盲犬基金會主任許雅娟指出，通常寄養家庭失敗的原因，是無法貫徹「外出大小便」的鐵律。