Ling Ling (giant panda) is roughly equivalent to 70 years old for a human. According to the Ueno Zoo, Ling Ling was the oldest panda in Japan, as well as the fifth oldest known captive male panda in the world at the time of his death. Ling Ling's portrait and favorite food, bamboo shoots, were displayed in his cage following his death. Zoo visitors left bouquets of flowers and signed condolence registers. Ling Ling's death left the Ueno Zoo without a resident giant panda for the first time in 36 years; since October 1972 when two pandas, Kang Kang and Lan Lan, were given
Giant panda urine. They are able to climb and take shelter in hollow trees or rock crevices, but do not establish permanent dens. For this reason, pandas do not hibernate, which is similar to other subtropical mammals, and will instead move to elevations with warmer temperatures. Pandas rely primarily on spatial memory rather than visual memory. Though the panda is often assumed to be docile, it has been known to attack humans, presumably out of irritation rather than aggression. Initially, the primary method of breeding giant pandas in captivity was by artificial insemination, as they seemed to lose their interest in mating