VIDEO: Last surviving rescue dog from 9/11 celebrates 16th birthday

Meet Bretagne. On this day 14 years ago she was one of the first search and rescue dogs to arrive at Ground Zero to search for survivors. 

Today, she is the last known living rescue dog from that day.

In 2011, she and her handler, Denise Corliss, were in Texas Task Force 1, and Bretagne had an intense first deployment.