1.   And the zoo staff hustled to complete a huge outdoor aviary called Wings Over the Outback as part of an ambitious Australasia exhibit.

2.   Early Friday, zoo staff had been hopeful that the artistic elephant would be saved.

3.   For an exhilarated zoo staff, this is the big prize.

4.   How, Houston zoo staff wondered, were they going to keep their alligator guest happy?

5.   On Sunday, zoo staff found that he was lethargic and not eating or drinking as much as he should.

6.   Several years ago, Vip flunked a sperm test, but zoo staff laid it to misleading results from the electro-ejaculator that collected the sperm.

7.   The fun begins when the polar bears romp in the snow as they look for snacks and goodies hidden by the zoo staff.

8.   The zoo staff has no clue why Lisa behaves as she does.

9.   The zoo staff looks for any tiny, promising sign, because the underlying reality is that Willie B. is a very, very sick gorilla.

10.   To be sure, the zoo staff actually demonstrated mothering behavior for the gorilla to mimic.