ATLANTA -- Another baby is expected at Zoo Atlanta!

Zoo Atlanta’s Animal Management and Veterinary Teams confirmed 11-year old giant panda, Lun Lun’s pregnancy at approximately 4:00 pm Thursday. “During today’s ultrasound, we confirmed a fully formed fetus with a very strong heart beat,” said Dr. Sam Rivera, Interim Director of Veterinary Services.

SLIDESHOW: Zoo Atlanta's Pandas & Other Animals

SLIDESHOW: Mei Lan's Baby Pics

In late July, Lun Lun began demonstrating a sharp decrease in appetite, followed by lethargy, somnolence and withdrawn behavior – all normal and expected patterns for a female giant panda experiencing either pregnancy or pseudopregnancy. The change in Lun Lun’s habits prompted the Animal Management Team to begin 24-hour birth watch on August 9, initiating round the clock observation of Lun Lun’s den.

The confirmation of today’s ultrasound is a confirmed indication that birth is eminent, zoo officials said.

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Lun Lun's first cub named Mei Lan was born on Sept. 6, 2006. Zoo Atlanta is one of only four zoos in the U.S. exhibiting the endangered species.