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

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

The sewer rats challenge the penguins to a game of ice hockey.

When the vet rounds up the penguins to give them a shot, Skipper's fear of needles takes over.

Mort quadruples in size after being exposed to Kowalski's super-ray.

Rico ignores a freaky fortune from his cookie, but Julien thinks Rico needs to believe in the superstition.

When a robot is sent to the zoo to learn from Julien, the penguins set out to retrain it.

A mysterious bandit is robbing the zoo animals of their beloved possessions.

Julien is horrified when the baboons' dance routine is getting more attention than his own.

After a mishap with Julien, Maurice and Mort are banished from his kingdom.

A tiny frog with a nasty attitude moves to the zoo and starts terrorizing the other animals.

Marlene catches a glimpse of Fred the squirrel and falls in love at first sight.

When a giant fish terrorizes the duck pond, Skipper leads a mission to eliminate the menace.

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

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

When Roger's sewer home becomes unbearable, the penguins try to find him a new home in the city.

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

A group of cockroaches ask the penguins for help with their exterminator problem.

Private wants to be friends with a group of badgers... until they threaten to hurt Marlene.

Private tells Mort that if he throws a penny in the fountain, his wish will come true... and it works!

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

A puffin from Skipper's past returns and tries to take over the penguins' habitat.

The penguins' car seems to have a mind of its own after Rico rebuilds it.

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

Private accidentally drinks Kowalski's truth serum and starts spilling the penguin's secrets to the rest of the zoo.

Julien believes Maurice is plotting an overthrow and the penguins send him through basic training.

Kowalski's attempt to super-charge his brain backfires and now he's dumber than mud.

Annoyed by the lemurs' constant music, the penguins plan to get them moved to another part of the zoo.

Private's quirky Uncle Nigel pops in for a quick visit from across the pond.

The penguins are inspired seeing a good deed and decide to perform their own.

Mort and Private are sucked into a vending machine after trying to retrieve a snack.

The animals think Julien caused old lady Gladys to slip and hurt herself.

Private accidentally steps on Dale the snail, so Dale wants some payback.

Lemmy the robot returns from Mars with a space squid.

After realizing that Maurice's thumbs could prove to be very useful, the penguins recruit him into their team.

The Penguins are faced with a global battle when their specialty food-making machine belches out a toxic cloud that threatens not just the zoo, not just the city, but the earth itself!

After Rico saves Shelly, she falls for him but things turn a little crazy when she kidnaps his doll in a fit of jealousy.

The other penguins agree to take Private to see "Lunacorns on Ice" to cheer him up.

Private is tasked with babysitting Eggy and his siblings for Momma Duck while the rest of the team is away, and has to protect the ducklings from the combined forces of the hornets and the sewer rats.

It's a special day when Bada and Bing get a shipment of delicious plantains to eat. Although they jealously guard the African bananas, King Julien's determined to taste them too.

The annual Zoo Snooze is here! This year the Vesuvius Twins buy up all the tickets. The zoosters plan to exact sweet revenge on the twins.

Snowmageddon hits and traps Skipper and Marlene in the convenience store, while Kowalski and Private get snowed into a tree.

Doris the dolphin's quest to rescue her brother Francis from Seaville brings her to the lovestruck Kowalski.