Dog hero and other pet news. Caroline Zuendel tells the story of her Labrador retriever, Sgt. Yeager, who won the Purple Heart for his service as an IED Detection Dog with the U.S. Marines in Afghanistan and Iraq. Additionally, Dr. Jennifer Goetz, a pet behavioral consultant and cat whisperer from the Animal Hospital @ Briar Creek in Raleigh, sheds light on what our animals are thinking.