The bears' fairy godmother grants Yogi the power to turn anything he touches into a picnic basket (à la Midas).

A mouse named Bigelow, whom Snagglepuss once freed from a mousetrap, is intent on freeing Snag from a zookeeper, despite the fact that the lion doesn't want to be freed. The main action takes place on a train, hence the title.

After a flea is "evicted" from a dog's hide, kind-hearted Yakky offers to let the flea live on Chopper.

Cindy Bear is in a circus, so Yogi runs off to join it; the circus owner get him a job as a lion tamer.

Sick and tired of being part of a lion taming act, Snagglepuss runs away from the circus and goes back to the jungle, expecting to be the king of the beasts.

Using a child's chemistry set, Fibber Fox creates a formula that shrinks Chopper down to Yakky's size, and the fox chases after the two of them.

Ranger Smith tries to trap Yogi with an alarm-rigged picnic basket, and fails; later Yogi mistakenly thinks the Ranger wants him shot.

A railroad company tries to put a track through Snagglepuss' cave, but Snag thwarts their efforts; the railroad then hires Major Minor to handle the situation.

Chopper and Yakky stay in an abandoned house for the night; Fibber Fox disguises himself as a ghost, hoping to scare Chopper away so he can catch Yakky.

When Ranger Smith goes on vacation, his seat is filled by Ranger "Iron Hand" Jones, who's more of a strict disciplinarian than Yogi can stand.

At the county fair, Snagglepuss is tired of being the target in an "African Dodger" type of game; he's talked into boxing with a kangaroo instead.

Chopper gives Yakky a trading stamp so his book will be completely filled, but the wind keeps blowing the stamp away from them.

A Japanese bear who's a martial artist is transferred to Jellystone, and Yogi gets him addicted to picnic baskets.

An outlaw is intent on shooting the sheriff of a western town; after their sheriff runs away, the people appoint Snagglepuss their sheriff.

Alfy Gator, in his first appearance, tries to catch Yakky so the 'gator can dine on roast duck.

The army has its war games in a sealed-off part of the park; when Yogi wanders in, he thinks Jellystone has been invaded.

Snagglepuss is being transported to the zoo on a riverboat; he escapes from his cage and poses as a riverboat gambler.

Bigelow the Mouse (from the Snagglepuss cartoon "Express Trained Lion") helps Yakky to stay out of Fibber Fox's clutches.

When a kiddie train is added to the park, Yogi becomes determined to ride it.

To evade hunters, Snagglepuss disguises himself as a soldier and winds up in an army camp.

A mad scientist switches Chopper's and Yakky's brains, and the two of them drive Fibber Fox crazy.

The military builds a secret rocket-launching base in Jellystone, and Yogi, Boo Boo, and Ranger Smith all wind up inside a space-bound rocket. This cartoon contains a great deal of satire of the military.

Snagglepuss visits an old English castle, which is haunted by a pair of mischievous ghosts.

Yakky and Chopper enjoy a day at the beach, until Fibber Fox starts chasing after Yakky again.

Yogi and another bear compete for Cindy's affections by bringing her gifts, committing a rash of thefts throughout the park in the process.

Snagglepuss protects a lioness named Lila (in her first appearance) from hunters by giving her shelter in his cave, but he soon finds her company less bearable than the hunters' bullets.

Alfy Gator is hunting Yakky again; in this cartoon, Yakky is unusually self-reliant as he fights back against Alfy.

A circuit judge is afraid to try a bank robber in a rough western town, so Snagglepuss steps in as judge, prosecutor, and a pair of witnesses.

Fibber Fox and Alfy Gator are both after Yakky, and the two of them fight over who's going to get him.

Yogi has Boo Boo dress up as a queen bee to lure bees away from their honey-filled hive, but an entomologist starts chasing Boo Boo.

In this takeoff of Cyrano de Bergerac, professional poet Cyril D. Snagglepuss is hired to help a suitor win a lady's heart, but something has gone wrong.

Yakky's wings are too weak to take him south for the impending winter, so Chopper tries to find him a home.

After sending in thousands of boxtops to a television show, Yogi receives a "Bat Guy" costume with functional bat-like wings, which he uses to swoop down on campers and steal their picnic baskets.

Major Minor tries again to catch Snagglepuss, this time with the aid of Snuffles.

Fibber Fox steals Chopper's dog tags and gets him captured by the dog catcher, thus leaving Yakky defenseless.

A television station is using part of Jellystone to shoot a western program, and Yogi and Ranger Smith get parts on the show.

To raise money for a trip, Snagglepuss rents out part of his cave, but his new tenant – Lila – is more than he can stand.

A witch is brewing a special recipe to celebrate her 110th birthday, and one of the ingredients is Yakky.

While being transported to the zoo, Yogi and Boo Boo escape into the woods, and start stealing food from stores and houses. The zoo they are intended to be transported to is the Cincinnati Zoo – coincidentally, Hanna-Barbera would be purchased by the Cincinnati-based Taft Broadcasting in 1967.

Major Minor uses psychology to capture Snagglepuss, by playing on his dreams of becoming an actor.

Alfy Gator invites Yakky to dinner, without mentioning that the duckling will be the main course; Yakky, however, brings his friend Chopper with him.

To prove that Yogi's been raiding his refrigerator, Ranger Smith rigs it with a practical joke; later, Yogi hatches a plan to get even.

Snagglepuss' identical twin brother Snaggletooth comes to stay for the summer, and the two of them inadvertently confuse Lila.

Lost in the desert, Yakky tries to be friends with a dangerous outlaw, and his attentions prove to be detrimental to the outlaw.

The army is playing war games in Jellystone, and one of the teams is disguising their soldiers as bears; of course, Yogi and Boo Boo get caught up in the games.

The king hires Snagglepuss to rid his castle of Bigelow the Mouse.

Yakky believes that he's now a Judo expert, and tries to fight Fibber Fox; Chopper secretly lends a hand.

In this episode-length cartoon, Yogi is told that he'll be appearing on a television program. He tries to prepare for the show by taking lessons from Fred Upstairs, Boppy Barrin, and Lee B. Rocky (spoofs of Fred Astaire, Bobby Darin, and Liberace, respectively), but the lessons don't go well. Yogi is afraid that he'll ruin the show, but at the last minute he discovers that it's actually a surprise birthday tribute for him and that he doesn't have to do anything.

The "guests" who show up to honor Yogi include Ranger Smith, Huckleberry Hound, Quick Draw McGraw and Baba Looey, Pixie and Dixie and Mr. Jinks, Snooper and Blabber, Snagglepuss, Hokey Wolf and Ding-A-Ling, Augie Doggie and Doggie Daddy, Cindy Bear, Boo Boo, and Yakky Doodle.