Bretagne worked in rescue efforts in New York City after the 2001 attacks on the World Trade Center. Bretagne died on Monday. She was 16 years old. Bretagne was a golden retriever. She helped to search for survivors and recover human remains from the wreckage of the World Trade Center. Over 2,500 people were killed when terrorists flew airplanes into the twin towers. The World Trade Center was Bretagne’s first deployment. She was only two years old at the time. Denise Corliss was the dog’s handler. She cared for Bretagne. They worked together in the area known as Ground Zero for 10 days. The dog also worked at other disasters, including three major hurricanes. Bretagne retired from active duty at age nine. According to Texas A&M University, the dog continued working in Texas as an ambassador with the local fire department. She also visited people who were sick, and children in learn-to-read programs. The university oversees a search-and-rescue program.