Seasons & episodes

A neighbor's prize bull strays onto the Martin farm and tries to attack Timmy. When the bull is later poisoned, the neighbor accuses Paul of the deed. Detectives Timmy and Lassie launch an investigation to find the real culprit.

When Timmy and Lassie bring home a litter of starving orphaned puppies, rescued from a maurading bobcat, the family tries to save them although one has already died of starvation. Inadvertantly, the pups teach Timmy, who's been relying on Paul to help him with arithmetic homework, about self-sufficiency.

Timmy observes what he believes is a wild horse which becomes a menace to the local farms but persuades Paul to convince the local farmers to spare the life of the horse which is later learned to be an escaped thoroughbred.

While Paul is away, Ruth and Timmy care for a stray dog that Timmy names Duke. But after being involved in a fight, Duke suddenly shows all the signs of rabies.

When the Martins travel by train to Chicago for an agricultural exhibition, as well as to visit Ruth's mother and family, Lassie is taken along, but her crate falls off the baggage car enroute and Tom and Jess, two friendly truckers, try to help her get back where she belongs.

Cully plays host to his old regiment's Army mule, but he and Timmy must save the animal from being destroyed when it suddenly goes mad and begins rampaging all over the countryside.

After finding out the local Army base needs dogs to guard their missiles, Timmy adopts Homer, a German Shepherd from the dog pound to give to the Army, but the dog has become so cowed from abuse that the family wonders if he can ever be trained.

Timmy and Lassie watch in horror as a man raids a golden eagle's nest and destroys her only egg, so Timmy gives the bereaved bird a goose egg to raise.

Enroute to the city to relocate after a drought, a backwoods family stops at the Martins after Timmy plays a trick on them. But when their son Billy Joe finds out his parents plan to give away his beloved dog Mitchell, he swears Timmy to secrecy after returning to the Martins', then he and the dog head for the woods--where deer season has just begun.

When Paul offers to farm the land Cully has allowed to lie fallow, the old man thinks Paul means he should retire. But after Timmy gives him a pep talk, Cully decides to fight back by hitching horse to plow and farming his land again.

Ruth is on volunteer tower duty during a dry spell and must take action when a forest fire starts due to a careless smoker. Meanwhile Lassie helps Ranger Wade start a backfire after he's injured in the path of the fire in a fall from his horse.

Timmy befriends José, a new Spanish boy in school (the other boys keep calling him "Josie"), but doesn't know what to do when José's pet coyote Taquita is accused of killing Mr. Ransom's chickens.

When Ruth thinks their cow is going dry, she makes the difficult decision to sell Bessie to the slaughterhousea and purchase a new cow. What they don't realize is that a neighbor's boy has been stealing some of her milk.

Lassie and Caesar, an Army homing pigeon that Timmy nurses back to health, get so attached to each other that when he is returned to the Army, she refuses to eat, and Caesar frees himself to return to his collie friend. So Timmy decides to see if the Army will let him buy the bird.

When carnival performer Mr. Conte's trained dog Terry is injured, Lassie substitutes for her--so well that he wants to buy her. When Timmy won't sell, the man steals her.

Timmy and Lassie make the acquaintance of Captain Gene Holter, a man who makes his living racing his two ostriches Romeo and Juliet against horses at county fairs. But when Ruth finds out Juliet, defending a egg she just laid, chased Timmy, she forbids the boy to return to the fairgrounds.

Lassie brings home a gold miner's pack burro, and Timmy and Culley get gold fever. The burro leads them to a mine, but their digging causes the roof to collapse, trapping them. Lassie and the fireman must rescue them before the mine fills with gas.

Timmy bets Lassie's new jeweled collar that she can beat a friend's new greyhound, Pat, in a race, and is chagrined when the collie loses.

Timmy bets Lassie's new jeweled collar that she can beat a friend's new greyhound, Pat, in a race, and is chagrined when the collie loses.

While playing on her own, Lassie brings home the talking doll belonging to a lost city child, who is trapped in a concrete irrigation ditch that's slowly filling with water.

Timmy erroneously believes that his operation of a machine he and his friends have made to contact Martians has caused an army plane to crash but the army believes that Lassie's behavior at the time of crash is a clue to accident.

Ruth and Timmy, visiting the Grand Canyon, befriend a blind pianist with a unique outlook on life who helps Timmy after he is angered by Lassie's behavior when she follows him on a mule ride and he's forced to turn back.

Timmy and Lassie discover the sad truth about Relentless, Cully's new--and much bragged about--dog: he's lost his sense of smell. The truth might have remained secret had not the money earned in a church fundraising drive gone missing.

The Gardners, the Martins' new neighbors, accuse Lassie of killing their cat and attacking their sheep, but Lassie knows there's a strange collie in the area.