Last week, health officials announced a house cat that died earlier this year tested positive for the bird flu, becoming the first mammal to test positive in San Diego County. The cat became infected through raw pet food. Bird flu has infected seven cats in California to date.On Midday Edition Tuesday, we hear tips from the San Diego Humane Society on what pet owners and animal lovers should keep in mind about the evolving bird flu virus.Guest:Dr. Zarah Hedge, chief medical officer, San Diego Humane Society