The Hogan Family (1986)

S5E4 Tracks of My Tears

Willie becomes fixated on securing the top spot on the track team and seeks David's assistance to train. However, he soon realizes that he lacks the determination needed for rigorous practice. At the same time, Sandy's ex-husband convinces her to look after a massive, Cujo-like dog, which stubbornly attaches itself to the leg of anyone who visits.