Saturday marked the public debut of San Diego Zoo’s most adorable resident: Zhen Zhen, a giant panda cub, born August 3, 2007.

The two- hour morning viewing started 9 a.m., when the 16.7 pound female panda cub could be admired at the Giant Panda Research Station.

Although Zhen Zhen has not been  in the public eye since birth, images of the cub have been available on the zoo’s web site, through a live camera.

The San Diego’s newest panda bear is the forth to be born here. Her parents, Bai Yun and Gao Gao, are also residents at this zoo.

Luckily, Zhen Zhen has been fully accepted by her mother, who has been taking good care of her cub since birth.

The name Zhen Zhen means “Precious” and it has been given to her on November 26, 2007, following an Internet naming poll.

Andrew Circo, the Zoo spokesman, said they did not expect the cub to receive as much attention as it did: “We weren’t sure how much interest there’ll be, since we have four pandas.”

However, San Diego Zoo’s “Precious”, previously introduced to the media on Friday, and attracted many visitors, who lined up outside the zoo’s gates just to see her.

Zhen Zhen has only been in public for two hours, but that amount of time will surely increase, depending on her mom’s response: “She takes her cues from her mother, so as long as Bai Yun is fine, she’ll be fine,” said Kathy Hawk, senior panda keeper for the zoo.

It’s been a busy morning for the young cub, and the morning audiences couldn’t have ended any other way than with a long nap.