A woman carries her child through a field near the collapsed Plaza Towers Elementary School in Moore, Okla., Monday, May 20, 2013. (AP Photo/Sue Ogrocki)

Dozens dead in Oklahoma City tornado

At least 91 people were killed, and officials said the death toll is expected to rise. More than 120 people, including 70 children, were bei…

In this undated photo, a working dog and a handler are seen in a criminal chase exercise (Courtesy: US Army via MGN Online)

Experts: Dog bites are preventable

About 4.5 million people are bitten by dogs each year, the Humane Society said, with 800,000 needing to be medically treated.