Once living on the street, a three-legged pit bull now shows aggression with her new owner's friends. Can intense training give her a second chance?

Adopted as a puppy, an excitable shepherd-husky mix longs for pack leadership and engagement — which raises deep-seated issues for an Oakland couple.

Even the sharpest protection dog can use regular refresher training. Jas visits boxer Andre Berto and his family to work with their beloved canine.

A couple who've both lost loved ones look to Jas for help in taking control of their rebellious pit bull puppy and turning his dominant energy around.

Jas extends a hand to a big, beleaguered rescue in the Mojave Desert and introduces a rehabbed hound to NFL player Marshawn Lynch and his goddaughter.