Season 2

October 2, 2010

With Coop out of town, Kat wants to turn water into milk and Dennis comes to the rescue.

October 9, 2010

Millie brings home the class hamster, unaware that Mr. Kat hates hamsters.

October 16, 2010

When Kat uses his growth ray to bury Bootsville in a catnip jungle, Coop is blamed by the irate Bootsville Gardening Club.

October 23, 2010

Coop tries to stop the destruction of Massive Mart.

November 6, 2010

Kat builds a Rat-ray gun, which he plans on using to turn Coop into a rat, but Dad gets zapped instead, so Coop hopes he can change Dad back... If he can catch him first!

November 13, 2010

Coop and Dennis climb inside Kat's scratching post and discover Kat's alien technology has created an infinity within.

November 20, 2010

Coop, Millie, and Dad are taken away to a top secret base to be interrogated, after a UFO investigator suspects they are aliens.

November 27, 2010

After taking the fall for one too many of Kat's destructive escapades, Coop decides to let Kat have free rein to cause whatever destruction he wants.

December 4, 2010

Due to an ‘over-loading’ problem on the Kat Nebula, Kat plots to turn Bootsville Beach into a giant litter box.

December 11, 2010

Kat’s devious magnifier satellite is causing a dangerous heat wave in Bootsville.

April 5, 2011

Coop and Dennis compete with one another to reduce their carbon footprints.

March 12, 2011

Coop uses Kat’s time machine to go back to the past and stop Millie from bringing Kat home, but ends up altering the future for the worse.

March 19, 2011

Coop tries to undo the Kat invasion, which he brought about by fooling with Kat’s time machine.

March 26, 2011

Coop becomes Dennis’ wing-man for a change, as they go in search of the 'sewer-croc-baby'.

April 2, 2011

Coop breaks every window in Dennis' house, and is forced to work off his debt by working in Henry's store.

April 9, 2011

Growler swallows a Kat device which makes him grow to the size of a T-Rex.

April 16, 2011

Kat's malfunctioning spybot thinks Coop is its new master, and wants to protect him from Kat.

April 23, 2011

The Kat Kommander's rebellious son runs away to Earth, where he becomes a handful for Kat, and a danger to the human race.

April 30, 2011

Dad accidentally swaps an assortment of Kat's weapons to the unwitting residents of Bootsville.

May 7, 2011

Kat is left at a kennel while the Burtonburgers go on vacation.

May 14, 2011

Kat becomes obsessed with making the biggest yarn ball ever made, and starts rustling sheep to gather their wool.

May 21, 2011

Dennis is accidentally knocked into a portal around the world.

June 4, 2011

Kat makes himself invisible and causes trouble for Coop on the night he invites Fiona to dinner and when Dad invites Coop's teacher over for dinner.

June 11, 2011

Coop's grandparents visit, so Dad buys them rocking chairs. However, it turns out they are adventure junkies who accept that Kat is an alien.

June 18, 2011

Coop searches for the last available bag of the feline's favorite food after the factory that makes it closes down so he can taunt Kat.

June 25, 2011

Old Lady Munson's garden gnomes come to life and mistake Coop as their leader.

July 2, 2011

Old Lady Munson tells Millie creative stories about her adventures in the past.

July 9, 2011

The evil alien hamster Mr. Cheeks comes back to get revenge on his nemesis, Kat.

July 16, 2011

Coop's birthday is here, and everyone is coming to his party, and Phoebe is trying to get rid of Fiona so she can have Coop to herself. Meanwhile, Kat is trying to enjoy a virtual picnic in a secluded spot with his girlfriend, but the kids and Coop keep crashing Coop's birthday.

July 23, 2011

Dad orders Coop to spend more quality time with his little sister; Kat builds a telepathy helmet.

July 30, 2011

Coop goes on a train to buy something from a man named Old Herman, Unfortunately it turns out to be the evil alien hamster, Mr. Cheeks!

August 6, 2011

Coop and Kat fight over the animal's new lightning box generator and end up swapping brains.

August 13, 2011

Coop discovers buried treasure under Old Lady Munson's house.

August 20, 2011

Kat's memory eraser leads to Coop forgetting Kat is an evil alien, but Dad accidentally gets Coop's lost memories and suddenly knows the terrible truth.

August 27, 2011

Kat builds a device that brings an assortment of movie monsters to life.

September 3, 2011

Coop and Dennis battle Kat's army of living hairballs.

September 10, 2011

It's Hot Dog Day, and Coop has the honor of being named Keeper of the Weiner Water. But Kat wants to ruin the most special day of the year.

September 17, 2011

Kat soups up Coop's new soccer shoes to allow the wearer to run faster and jump higher, and Coop wears the shoes in the championship game.

September 24, 2011

Kat turns Coop into a cave man, hoping his lowered I.Q. will make him easier to outsmart. Now Dennis must change Coop back to human.

October 1, 2011

Coop takes on the teen aged bully who pedals the Curly Swirl Ice Cream cart, and forgets to pay attention to Kat's latest evil plans.

October 8, 2011

Kat makes himself a high-powered good luck charm, which means bad luck for Coop.

October 15, 2011

Buck Diamond, Animal Protection Officer declares Coop "Bootsville's Most Wanted".

October 22, 2011

Coop and Fiona have to settle their argument before they can work together to stop Kat in his evil tracks.

October 29, 2011

Kat and Old Lady Munson show up at school where they work together to make Coop's life miserable.

November 5, 2011

Kat shrinks Coop and Dennis down to size and tries to squash them like bugs, which makes it hard for Coop to do something big for Dad for Father's Day.

November 12, 2011

Kat thinks the haunted LeBoot Mansion will be the perfect place for an inter-space teleporter.

November 19, 2011

Kat controls the mind of Agent Napolitan, but his plan backfires when some squirrels attack him.

November 26, 2011

When Kat is fired for incompetence the Robo-Kat-Kops that are sent to take him home also capture Coop, Dennis, Fiona, Millie, Lorne, and Harley and take them to the Kat Planet.

December 3, 2011

Coop and the rest of the kids need Kat's help to escape Kat Planet. Will he give it?