Seasons & episodes

When Gramps and Ellen tell him that Lassie is going blind, Jeff takes the dog on a long journey to find the doctor that can restore her sight.

Jeff decides he wants to be a veterinarian, and his first patient is the Miller cow.

Ellen accidentally brings home a valuable champion collie from a dog show rather than Lassie--and is accused of theft!

Jeff and Porky, told to babysit little Janie, leave the child with Lassie while they run to see construction equipment at work, not knowing Janie is following them.

After a friend's mother is involved in a serious car accident, Jeff becomes over protective of Lassie.

Jeff, in charge of collecting money for Sunday School, loses the contributions and has no way of replacing them.

Jeff discovers that a new classmate's father is jacklighting deer.

A disreputable horse dealer schemes to buy Jeff's colt cheaply by proving to Gramps that the horse is vicious.

One of Lassie's puppies, Comet, mistreated by its owner, has turned wild.

Jeff and Porky enter the world of business when they take a 4-H calf home from the county's fair, intent on raising it to sell for the price of an outboard motor. In their care, the calf grows into a prize-winning heifer.

Gramps' blames Lassie's son Laddie's illness on the spray used by a local crop duster.

Jeff persuades a neighbor to buy a rehabilitated war dog, only to have the dog exhibit aggressive behavior. Joe Brown: James Griffith.

Ellen battles with Jeff to go get a haircut--until the unexpected happens.

Jeff and Porky quarrel over a new girl in town, who is happily playing one boy off another!

When Jeff and Porky discover their competition jumping frog is female and about to lay eggs, they drive Gramps and Ellen to exhaustion in their quest to see the eggs are fertilized and produce offspring.