Easier to dump dogs than raise them According to a surrey conducted by Dr. Jason Yeh of Taiwan University's veterinary medicine department, the average life expectancy of urban street dogs is 2.3 years, only one fifth of a dog's natural lifespan--far shorter than dogs with homes. But stray dogs only continue to increase, not diminish. The simple explanation is--people dump their pets.
台大獸醫系教授葉力森的調查指出，都市流浪狗平均壽命較家犬低，有百分之六十的流浪狗活不到二．三歲，只有壽終正寢狗兒歲數的五分之一，但街頭流浪狗卻有增無減，最簡單的答案就是﹘﹘有人丟狗。