Brookfield Zoo Chicago said goodbye on Friday to one of its beloved Amur tigers, Malena. She was euthanized after one of the ...

Amur tigers, once known as Siberian tigers, are critically endangered. Brookfield Zoo Chicago said there are less than 500 remaining in the wild.

Malena was euthanized after one of the zoo's vets found a developing cancer was keeping her kidneys from functioning properly ...

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