Lassie

Determined to start a new life in the country, the Turner Family - Dad, stepmom, little Jennifer and teenager Matt - leaves the city for the wilds of Virginia. The move creates problems for everyone, especially Matt, who feels lost and alone in his new surroundings. Fortunately, the Turners are helped by a homeless collie who becomes part of their lives - and Matt does a lot of growing up as a result of the dog's unflinching loyalty. (imdb)