Two bear cubs have been rescued from a circus in Hanoi, Vietnam after animal welfare staff saw footage on them being forced to perform tricks, including riding motorcycles and suffering a fall during a show. The cubs named “Sugar” and “Spice” are estimated to be less than a year old and appeared frightened when approached, according to a rescue team from Animals Asia. The animal welfare group says that without natural hunting skills needed to survive in the wild, the bears could end up having…