Marlene plans a game night to help the zoo animals bond but it takes a terrible turn when the snacks run out.

Lemmy the robot returns from Mars with a space squid.

Kowalski brings Jiggles back to life in miniature form, but trouble arises when Jiggles multiplies.

Kowalski creates a love laser to make people fall in love, but it soon backfires.

An extinct dodo is brought back to life, but his reckless behavior puts him in constant jeopardy.

The penguins sneak out of the zoo at night to party with the other animals in the park, but they have trouble getting home by morning.

Private helps a young leopard seal return to Antarctica, and his pals follow him in a submarine. However, danger looms when they get to their destination.

The penguins erect a large toilet as a trap for Dr. Blowhole, but Julien wants it as his new throne.

Private is blamed for hurting Dale the Snail.

Kowalski is unable to attend a big inventor's expo due to his broken legs.

The animals stop receiving special treats from an old woman who may have been injured because of King Julian.

The penguins receive a warning that the notorious Red Squirrel has planted a brainwashed sleeper agent in their presence.

Kowalski finds a way to stop time, unfortunately King Julian gets a hold of his device.

Private and Mort are trapped in a vending machine. While they attempt to escape, King Julian believes they have been kidnapped by TV personality Professor Quimby.

After witnessing a scout perform a good deed at the zoo, the penguins decide to up their good deed quota, however they learn that not all good deeds go unpunished.

Kowalski creates tiny robots which do the penguins' chores for them, but also grow overprotective of the penguins.

The Vesuvius Twins bring Skipper and Julien to their home and force them to fight one another.

Skipper falls into a trap set by Dr. Blowhole (voice of Neil Patrick Harris), who then extracts Skipper's memories and uses them to find the other penguins and transform them into villains.

The penguins plan a vacation on the high seas but a storm blows them off course onto the streets of Hoboken, New Jersey. After being taken to the Hoboken Zoo and meeting some old friends, Skipper is adamant the zoo holds a sinister secret.

Private's uncle visits and reveals that he is a secret agent.

When Skipper, Private and Kowalski get a food born illness, Rico must keep them from eating any more contaminated herring.

An accidental zap from the Fresherizer ray turns Skipper into a baby.

The animals panic when they hear that a boa constrictor has escaped from the Hoboken Zoo.

The lemurs' constant partying gets out of hand, so the penguins have them moved to the petting zoo.

Private learns how to use his cuteness to his advantage..but will it work?

A fax with horrible news arrives at the Zoo: Maurice has only 24 hours left to live. So all the animals decide to make his last day unforgettable and treat him as a king. Even King Julien ! How will this day turn out eventually?

Skipper swaps places with King Julien for a day, and things at the zoo fall into disarray.

The Penguins do their best to make their new zoo-mates comfortable, but they keep messing up.

Mort and his tail, Rodney, are chosen for a top secret spy mission. King Julien is jealous.

Julien likes to party 'till the break of dawn, and the Penguins want peace and quiet.

Skipper warns the team about the dangers of reading flashy comic books, but they don't seem to care.

Julien has fun barking orders at new zoo occupant Clemson, whom Mort is suspicious of.

Kowalski's experiment on his brain goes awry, and he becomes dumber instead of smarter.

Officer X fills in for a vacationing Alice and keeps a very close eye on the penguins.

Private keeps injuring himself so he can see the new zoo nurse he has a crush on.

When Burt gets a hold of Alice's paintbrush, he paints a picture of an elephant with it on a nearly wall to the delight of zoo patrons.

Julien suspects a plot to overthrow or kill him is being orchestrated by Maurice after he overhears Maurice conversing with other animals about an ill-sounding plan.

When the zoo closes for the Christmas holiday, the animals gather to begin work on Kidsmas, their annual holiday festivities mainly designed to delight the younger animals. Each animal is assigned a Kidsmas preparation task to perform, but Julien, desiring a different one, rearranges each animals' task.

After spying on everyone with the others, Private accidentally drinks Kowalski's Truth drink that makes you spill the truth and now Private starts telling all the animals secrets! Can the penguins fix this before Private spills everyone's secrets?

After getting a kid's balloon back, Skipper mentions something about The Big One. He explains he has been waiting for it to come for months and he hid some plans in a remote area of the zoo for when the big one comes. But it is revealed that they are building a children's zoo on the spot he hid the plans, so now they try to get the plans before The Big One Comes. But Skipper then starts acting like a news reporter. Can Skipper stop acting like a reporter, and can they get the plans in time before the Big One comes?

Two thieves stash a jewel at the Central Park Zoo, and plan to find it, no matter who gets in their way.

A devoted Russian repairman comes dangerously close to destroying the world when repairing the penguins' habitat.

Kowalski steals the computer chip from Mort's new favorite game to finish his mind-reading device.

Rico takes their remote control car out for a spin and crashes it; After rebuilding it, it begins acting violently.

The penguins try to return a baby after Private accidentaly knocks it out of the zoo.

Kowalski, banned from inventing by Skipper, secretly invents an amazing device he cannot take credit for.

Skipper's old puffin enemy Hans comes to the zoo, claiming to be interested in friendship while really seeking to steal the penguins' lair for himself.

Rico is determined to get an upgrade for his doll-girlfriend that will allow her to speak.

King Julien finds out about April Fool's Day and makes up for all of the lost years by pranking the zoo animals.

Private discovers that the fountain grants wishes and Alice nearly exposes the penguins' operation.

Private attempts to convince Leonard the Koala that the penguins are harmless.

A boa constrictor transfers to the Central Park Zoo and animals begin disappearing.

When Kowalski invents a helmet that turns thoughts into actions- essentially granting the wearer the power of psychokinesis-, Julien steals it to use its power for himself, only for the entire zoo to be imperiled when Julien turns the helmet's power up to such an extent that he summons objects to him with mere casual thoughts.

Disappointed at Skipper's refusal to allow him to use his explosive talents, Rico begins working for King Julien as a demolitions expert, but the new lack of restraint imposed by the other penguins results in Rico destroying Julien's habitat before he is contained.

Marlene tries to help Private overcome his fear of badgers.

When a boy on a school trip sees the Penguins in action, the team scrambles into action to steal his notebook; meanwhile, Julien attempts to form his own team to claim his old backscratcher from the museum.

Private is repulsed when Rico befriends three cockroaches.

Private must pass a difficult test on the New York streets in order to move up in rank and share a classified joke. In order to move up ranks Private must face a "haunted bus" but he is forced to safe the lemurs as they have been caught by the "haunted bus".

Bent on an agenda to defeat "Mr. Tux" in a round of mini golf, an armadillo comes to the zoo believing that one of the penguins is him.

The penguins and King Julien believe Marlene has the cooties after overhearing school children.

When they realize their operation is at risk of being exposed, the penguins head to an ad agency to destroy the incriminating evidence.

The penguins, the lemurs, and Marlene race against the sewer rats to find the Lost Treasure of the Golden Squirrel.

The penguins try to convince Eggy the duckling that their paramilitary activities are too dangerous for him.

The penguins help Randy the sheep with a problem child in the petting zoo.

The penguins strive to protect the zoo commissioner from Frankie the pigeon's plan of revenge.

The penguins attempt to relocate Roger the alligator after dining with him in the sewers.

Kowalski's future self visits and orders his present self to stop working on his time machine.

The penguins fall under the spell of Skipper's idol, Rockgut.