A still image from a monitoring camera shows giant panda mother Yang Yang holding her newborn cub inside a birth box at Vienna zoo.

Giant panda mother Yang Yang holds her newborn cub inside a birth box at Vienna zoo, on the day of the cubs birth August 23, 2010.

The panda cub, whose sex is not yet detectable, measures some 10 to 12 cm (3.9 to 4.7 in) and weighs about 100 grams, the zoo reported August 24. Picture taken August 23, 2010. Picture rotated 90 degrees.