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26 Episodes 2010 - 2011
Episode 1
Sat, Sep 11, 201022 mins
Coop falls in love with Old Lady Munson's great-great grandniece. / Millie tames Kat by tickling him in a sensitive spot.

Episode 2
Sat, Sep 18, 201022 mins
Kat's swarm of flea-sized mind control robots hop into the ears of the people of Bootsville and soon they all destroy Coop. / With Coop out of town, Kat wants to turn water into milk and Dennis comes to the rescue.

Episode 3
Sat, Sep 25, 201022 mins
Millie brings home the class hamster, unaware that Mr. Kat hates hamsters. / When Kat uses his growth ray to bury Bootsville in a catnip jungle, Coop is blamed by the irate Bootsville Gardening Club.
Episode 4
Sat, Oct 2, 201022 mins
Coop tries to stop the destruction of Massive Mart. / 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.
Episode 5
Sat, Oct 9, 201022 mins
Coop and Dennis climb inside Kat's scratching post and discover Kat's alien technology has created an infinity within. / Coop, Millie, and Dad are taken away to a top secret base to be interrogated, after a UFO investigator suspects they are aliens.
Episode 6
Sat, Oct 16, 201022 mins
Coop decides to let Kat have free rein to cause whatever destruction he wants. / Due to an 'over-loading' problem on the Kat Nebula, Kat plots to turn Bootsville Beach into a giant litter box.
Episode 7
Sat, Oct 23, 201022 mins
Kat's devious magnifier satellite is causing a dangerous heat wave in Bootsville. / Coop and Dennis compete with one another to reduce their carbon footprints.
Episode 8
22 mins
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. / Coop tries to undo the Kat invasion, which he brought about by fooling with Kat's time machine.
Episode 9
22 mins
Coop becomes Dennis' wing-man for a change, as they go in search of the 'sewer-croc-baby'. / Coop breaks every window in Dennis' house, and is forced to work off his debt by working in Henry's store.
Episode 10
Sat, Nov 20, 201022 mins
Growler swallows a Kat device which makes him grow to the size of a T-Rex. / Kat's malfunctioning spybot thinks Coop is its new master, and wants to protect him from Kat.
Episode 11
22 mins
The Kat Kommander's rebellious son runs away to Earth, where he becomes a handful for Kat, and a danger to the human race. / Dad accidentally swaps an assortment of Kat's weapons to the unwitting residents of Bootsville.
Episode 12
22 mins
Kat is left at a kennel while the Burtonburgers go on vacation. / Kat becomes obsessed with making the biggest yarn ball ever made, and starts rustling sheep to gather their wool.
Episode 13
22 mins
Dennis is accidentally knocked into a portal around the world. / 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.
Episode 14
22 mins
Coop's grandparents visit, so Dad buys them rocking chairs. However, it turns out that they are adventure junkies who accept that Kat is an alien. / So he can taunt Kat, Coop searches for the last available bag of the feline's favorite food after the factory that makes it closes down.
Episode 15
22 mins
Old Lady Munson's garden gnomes come to life and mistake Coop as their leader. / Old Lady Munson tells Millie creative stories about her adventures in the past.
Episode 16
22 mins
The evil alien hamster Mr. Cheeks comes back to get revenge on his nemesis, Kat. / 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.
Episode 17
22 mins
Dad orders Coop to spend more quality time with his little sister; Kat builds a telepathy helmet. / 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.
Episode 18
22 mins
Coop and Kat fight over the animal's new lightning box generator and end up swapping brains. / Coop discovers buried treasure under Old Lady Munson's house.
Episode 19
22 mins
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. / Kat builds a device that brings an assortment of movie monsters to life.
Episode 20
Sat, Apr 16, 201122 mins
Kat coughs up a trio of living hairballs, which he orders them to attack Coop. / 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.
Episode 21
22 mins
Kat upgrades Coop's sneakers to run super fast. / Kat turns Coop into a caveman so he would be to stupid to stop his plots.
Episode 22
22 mins
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. / Kat makes himself a high-powered good luck charm, which means bad luck for Coop.
Episode 23
Sat, May 7, 201122 mins
Buck Diamond, Animal Protection Officer declares Coop "Bootsville's Most Wanted". / Coop and Fiona have to settle their argument before they can work together to stop Kat in his evil tracks.
Episode 24
22 mins
Kat and Old Lady Munson show up at school to torment Coop. / 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.
Episode 25
22 mins
Kat thinks the haunted LeBoot Mansion will be the perfect place for an inter-space teleporter. / Kat controls the mind of Agent Napolitan, but his plan backfires when some squirrels attack him.
Episode 26
Mon, Oct 10, 201122 mins
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. / Coop and the rest of the kids need Kat's help to escape Kat Planet. Will he give it?