D.C. Zoo: Panda Behavior Hints At Possible PregnancyThe Smithsonian's National Zoo says its female giant panda is showing behavioral changes and is focused on building her nest as animal keepers watch for a possible pregnancy.
National Zoo Panda Has Signs Of Possible PregnancyScientists at the National Zoo say they have detected a rise in hormone levels in the female giant panda, Mei Xiang that could indicate the panda may give birth or end a false pregnancy by early July.

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