If there is one five-year-old girl you definitely don't want to mess with, it's this one.

The daughter of a dog training expert, her dad provided her with her very own German Shepherd bodyguard to keep "bad guys" at bay.

You will see her dog engage the bad guy and as soon as the second one tries to reach for her ...he lets go of the first one to engage the second bad guy. He doesn't let either of the bad guys get to her. He doesn't let either one place a single finger on her.

There's a good boy.

[H/T: Viral Viral Videos]