Both Weasel and I.R. end up in hospital after a collision course. However, a slight mix-up in the operation room leads to both having the other’s brain. This episode was originally meant to be the series finale, but the show was renewed for a second season.

Weasel and I.R. concoct life, but the red-butt baboon soon becomes jealous when Weasel’s world evolves faster than his.

I.R. is the captain of his own ship, but Admiral Weasel is concerned over his rules and the condition of the actual ship.

Lance Sackless (The Red Guy) creates his own athletic games, with Weasel and I.R. as his only contestants.

I.R.’s organic pig farm causes an uproar in a city, leaving it up to Weasel to solve the problem.

Weasel’s theory on monkeys typing Shakespeare goes wrong when almost every monkey involved walks out on him. However, he sees hope in the form of I.R. Baboon, who writes a book entitled “A Troo Storee”, despite the fact that it lowers peoples’ I.Q. level.

Weasel and I.R. run one of the best hair salons around. However, the hair police (The Red Guy) soon has a look into this in an attempt to shut them down.

Weasel attempts to teach I.R. Baboon proper etiquette in preparation for a royal gathering in Yurp.

With help from the Red Guy, Cow manages to fish Weasel out of her TV and into her home, leaving it up to I.R. to find him.

I.R. Baboon takes the role of Robin Hood, with Weasel being his ally, Little John.

Weasel and Baboon are on an expedition to capture a wild, dim-witted savage named Fred. When they manage to capture him, Weasel, however, cannot understand his unusual language.

Doctors Weasel and I.R. shrink themselves in order to perform an operation, which is to repair a crack in The Red Guy’s butt cheek.

Weasel and his guest spend some quality time together in Saskatchewan, Canada. Later, Weasel teaches I.R. about ice fishing.

Based on Cinderella, Cinder-Weasel tries to make it to the evening ball, despite the interference of his evil stepbrother, I.R. Baboon. He relies on the help from his fairy godfather (the Red Guy).

Weasel and I.R. investigate to see who has done the heinous crime of erasing Cow and Chicken out of existence. Eventually they discover that the culprit is the Red Guy trying to take over the show, and this was all a dream Cow had.

I.R. adopts a baby, but is soon given lessons in motherhood by Weasel. This episode had to be revised in 1999 to remove the letter “N” from I.R.’s helmet after a lawsuit from the University of Nebraska.

A poetic I.R. attempts to get a driving license, with Weasel being his instructor.

Based on the true story of The Wright Brothers, The Red Guy narrates a documentary about The Wright Bros. and the Rong Bros. (Weasel and I.R.), competing to see who could invent the first plane.

Weasel and I.R. travel in time, changing it in the process (expect dinosaurs and the inventions of glasses and onion rings).

After tripping over an invisible pot-hole, I.R. breaks his “phantom foot”. Ultimately, he attempts to sue Weasel over his injury.

In an attempt to prove his claim that he’s a better musician than Weasel, I.R. gatecrashes a live event, armed with a theremin.

Weasel creates a device that controls peoples’ sleeping patterns, and decides to use it in order to help give the public their ability to dream again.

I.R. Baboon is jealous over his neighbor, Weasel, because he has a better life, job, and family (married to a beautiful Hispanic woman with half-weasel children) than him. However, when he’s invited over to Weasel’s house for a barbecue, I.R. tries to impress him with his own “family” (his pretend marriage to a pantsless woman, […]

I.R. is running a failing plant stall and attempts to do a better job by selling a rare thistle from a nearby plant museum.