Reid Park's surviving giraffe watched closely

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TUCSON, Ariz. -- Following the poisoning death of Reid Park Zoo's only male giraffe "Watoto," zoo keepers are keeping a close eye on "Denver," the surviving female giraffe.

Denver is in stable but guarded condition after she and Watoto were fed toxic oleander leaves by an apprentice zoo keeper earlier this week.

She's walking around and drinking water, so the staff is optimistic that she'll recover and start eating again soon.