Frustrated by their obnoxious lemur neighbors, the penguins decide to take a vacation... to the moon.

A giant balloon float of a killer whale haunts Private.

Private is upset when Mort is chosen to be the cover animal for the zoo's brochure.

Private is smitten with the zoo nurse, but the only way he can see her is to get injured.

Marlene discovers a lost egg and thinks the Penguins would be perfect egg watchers.

Julien goes on a pranking spree when he learns about April Fool's Day.

Kowalski steals the computer chip from Mort's new video game to finish an invention.

The penguins try to help Randy overcomes the problems he's having at the petting zoo.

The penguins and Julien believe Marlene has cooties after overhearing a group of schoolchildren.

When a baby stroller rolls outside the zoo, the penguins redefine the term "daycare."

The penguins accidentally blow up the koala habitat wall, so Leonard has to bunk up with Joey.

The penguins leap into action when a spooky noise frightens Marlene.

The popularity of stuffed Mort dolls causes Julien to sabotage the toys, prompting a recall.

Maurice bribes the animals with candy so they'll celebrate "King Julien Day."

When Skipper steals Julien's radio batteries, a wild chase gets them stuck in a kangaroo pen.

After Rico ingests a strange liquid, he discovers he can no longer regurgitate items from his belly.

The penguins and lemurs face off in a winner-take-all race around the zoo.

The penguins aren't happy when their fish supplies are replaced by imitation fish cakes.

Kowalski travels back in time to prevent himself from building a time machine.

Eggy the duckling is convinced that he can handle dangerous missions like the penguins.

The Amarillo Kid arrives and declares that he has a score to settle with "Mr. Tux."

The penguins become convinced that a kid on a field trip to the zoo is spying on them.

The penguins must stop a contractor from completing repairs on their habitat before he destroys the world!

When Skipper is knocked on the head, he's unable to lead the penguins on an important mission.

The penguins are recruited by Buck Rockgut to help him capture the Red Squirrel.