When Gramps quarrels with Matt Brockway after a hotly contested checker game, both men forbid their sons to play with each other. After Jeff and Porky's first attempt to fix the problem goes horribly wrong, so the boys hide in the woods in hopes that in ""saving"" them Gramps and Matt will be friends again.

With Gramps and Ellen away for the day, Jeff and Porky plan a lazy day--until an escaped circus lion invades the farm. Worse, no one will believe them when they call for help.

Ellen offers the boys a special treat if they will babysit a boy while she is called out on an errand. But the kid turns out to be more than Jeff and Porky can handle.

When Jeff and Porky see pit bull terriers, Gramps suspects illegal dogfights are being held in the area.

Porky enters Lassie in the Capitol City Dog Show obedience trials without knowing what the procedure is, but Jeff finds out what's involved and trains her.

Lassie comes down with an odd ailment. The kids are convinced that a creepy old lady they call the "witch woman" has cast a spell on the dog.

Jeff and Ellen plan a surprise party for Gramps so well that Gramps feels neglected on his birthday and ""runs away.""

In a quest for a valuable stamp, the boys begin quarreling with each other.

Matt Brockway says Pokey is useless and tells Porky he is going to give the dog away.

Jeff and Porky horrify Gramps by trying to tame a red-tailed hawk as a hunting falcon.

The boys quarrel over Pokey being able to sleep in their new tree house.

The boys' journey on their new raft is hampered by the fact that Porky can't swim.

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.

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

Jeff and Porky try to raise bees for an upcoming 4H show but a wild raccoon threatens to ruin their work.

Ellen tries to teach Jeff a lesson about being on time but Jeff takes the idea a little too far.

Jeff misunderstands a man who gives him a ride--and the newcomer is branded as an ex-convict.

Jeff discovers that the reason for Jenny's grumpiness is that no one remembered her birthday.

Porky is upset when a black cat crosses Lassie's path and then she walks under a ladder, but Jeff and Ellen tell him superstitions are silly--but Jeff may be converted when unfortunate things keep happening.

After being punished for something he didn't do, Porky tells Jeff that he's running away. Jeff asks Porky to stick around in the hope that he can convince him not to leave.

Porky and Jeff receive a chimpanzee by mail instead of the hamsters ordered. When they try and hide the chimp from everyone, they discover that the task is far more difficult than they imagined.

A baseball that gets misplaced during rock collecting for a school exhibit causes a rift between Jeff and Porky.

Porky and Jeff spend a night roughing it in the woods but their tranquility is threatened by a nearby camper's carless fire tending.

While Porky and Jeff go off to identify birds for a school project, Lassie tends bird eggs whose mother was killed by a ferret.

Jeff and Porky are sheriffs on the town's annual boy's day, so Gramps cooks up a fake robbery to give them a little excitement.

On a dare, Porky and Jeff venture into a supposed haunted house and are surprised to see what appears to be a real ghost.

Timmy is so excited about his new suit that Ellen allows him to wear it until Jeff gets home, but when he tears it, afraid they will send him back to his aunt and uncle, Timmy lies and lays the blame on Lassie. To make him confess, Ellen makes him decide Lassie's punishment.

Jeff is thrilled to accept a summer job at Doc Weaver's office, but when he neglects his duty for a few minutes, a potentially rabid dog is let loose

When Timmy and Lassie find a sick burro, abandoned by neglectful but well-meaning owners, everyone thinks Timmy's exaggerating until Ellen finds the creature. Timmy's faith and the family's nursing save the burro, but then her owners come return.

Timmy and Jeff nurse an injured raccoon against protests from Gramps--and ""Sam"" repays them by wreaking havoc in kitchen, barn, and chicken coop. Released to the wild, he returns to begin stealing things from the house.

Jeff and Timmy saw a huge elephant. Ellen & Gramps doesn't want it as an 2nd Pet for Lassie. They decided to keep it until the animal control person comes by and wanted to get rid of the elephant.

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Timmy believes he and Lassie are unloved and unwanted by the Martins, and sends Lassie to the Millers in Capitol City. Ellen Miller, knowing that Timmy is mistaken, returns to the farm to reunite Timmy with his loving adoptive parents.