71-year-old Zhou Xianchuan and his wife are seen with their dog named Heizi in Feixi County, east China's Anhui Province, Oct. 16, 2015. By the end of 2014, the number of the Chinese senior people above 60 years old was 212 million, about 15.5 percent of the country's total population. Nowadays, more and more senior people in China prefer to raise pets that have been proven to make positive contribution to an senior citizen's life. (Xinhua/Liu Junxi)
