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 ...

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

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

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 ...