California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in that state and causing sporadic illnesses in people in the U.S.

Los Angeles County health officials have identified three more cats with presumptive H5N1; the source of the virus has not yet determined, but experts suspect raw meat.

Northwest Naturals is recalling a line of its pet food after authorities Oregon linked the death of a cat to a batch contaminated with bird flu.