The Sichuan Wolong Panda Protection and Breed Center is dealing with the results of a breeding boom -- 16 pandas have been born since July, 2006. The brood in cludes five sets of twins. The cubs are weighed and measured every five days . The heaviest tips the scale at just over 24 pounds, while the lightest weighs about 11 pounds. Once weane d, the panda cubs will attend panda kindergarten. In the meantime, more little ones are expected at the c enter since 38 giant pandas were artificially impregnated.