This National Geographic hintergrund might contain
bereich, gebirge, gebirgskette, kette, bergkette, reichweite, reichweite von bergen, kette von bergen, range, reihe von bergen, and gebirgszug.
A Pitbull named Goliath has become very protective of his owner after he was diagnosed with a brain tumor. Cesar has been working with Goliath and his family on turning Goliath's overprotective energy into something positive.