Just days from being euthanized, a pit bull given a second chance becomes a fire-fighting hero.

Shot four times at point blank range, a military working dog loses her leg protecting soldiers in Afghanistan.

Caught on camera: incredible video shows the heroics of a police K9 protecting the citizens of Florida.

Fighting with a suspect inside a dark closet, a police K9 survives a near-fatal stabbing.

Fighting with a suspect inside a dark closet, a police K9 survives a near-fatal stabbing.

From the battlefield, to the home front...first-hand accounts of courageous canines saving lives, Available Now on Fox Nation.

First-hand accounts of courageous canines serving on the battlefield, told by the heroes who fought alongside them. Available now on Fox Nation.

First-hand accounts of courageous canines serving on the battlefield, told by the heroes who fought alongside them.