July 12, 2026, 5:22 p.m. ET There's no "Little House on the Prairie" without the family dog, Jack, who plays a major role in the Netflix series (now streaming). Jack, the fiercely loyal brindle bulldog from Laura Ingalls Wilder's classic book series, was portrayed by a cockapoo-terrier mix dog actor named Barney in the NBC series (1974–83). In the Netflix series adaptation, Jack is played by four border collie-Australian cattle dog mixes.