K9 Shep and his handler became a nationwide sensation after their body cam footage went viral. K9 Robby steps aside, giving rookie K9 Seff the chance to step up and make the collar.

In Texas, everything's bigger, except the hiding spots, and K9 Enzo proves it, locking onto a suspect wedged beneath a house. In Florida, officers shut down traffic for a high-stakes helicopter landing, rushing K9 Huk to an emergency hospital.