In the scenic area of Taishan Mountain in east China's Shandong Province, robotic dogs are used as porters to carry heavy items and remove waste. In the city of Qingdao, two robotic dogs with a range ...

BEIJING, April 11 (Xinhua) -- Humankind has been keeping pets, such as dogs and cats ... to a burgeoning realm of robot "pets" that are quite different from their fluffy, biological kin.