Officials at Wildlife World Zoo in Arizona reported two big cats and three large birds died, while 25 human employees were ...

Take a peek back at the photo comparisons pulled from The Arizona Republic archives that show just how much metro Phoenix has changed over time.

A global outbreak of avian flu has reached Arizona, affecting animals and humans. Officials say the public health risk ...

The first severe case of H5N1 bird flu was confirmed in Louisiana. Here is a map of other states that have been affected.

Several animals fell ill and died of bird flu at a Phoenix-area zoo, Arizona public health officials have revealed, though ...

Animals at the Wildlife World Zoo in Arizona tested positive for bird flu, resulting in the deaths of a cheetah, a mountain ...

Five animals from a Phoenix-area zoo died this week after testing positive for avian influenza, or the bird flu, but here ...