Just days after the USDA issued a new order that all raw milk must be tested for bird flu, reports have emerged of animals dying of the virus, including cats and several zoo animals.

The San Francisco Zoo is keeping some animals out of sight, hoping to protect them as cases of bird flu are found in the Bay Area.

Several animals fell ill and died of bird flu at a Phoenix-area zoo, Arizona public health officials have revealed, though they emphasized there was virtually no risk to the public.

Idaho's Department of Fish and Game says suspected avian flu outbreaks statewide are leading to thousands of wild bird deaths.

A new study highlights the need to ramp up bird flu surveillance in cats because some of them have frequent contact with both wild animals and people.