I’m going to be Captain Obvious but it is literally the job of a herding dog to fend off threats to their charges.

Or is the surprise about the number he caught and killed?

Most of us never really know what our dogs are really capable of. The big bruiser snoring away on the floor might be a scary cat (pun intended) while the little fuzz ball that gets picked and carried around might be a vicious guardian waiting for a chance.

Never underestimate a dog.