The timeline of the series may or may not take place in episode order. Some indicators exist.
- Let The Games Begin introduces Kat, precedes all others
- Beware The Were-Coop precedes all episodes Dennis knows Kat is an alien
- Something About Fiona first Coop-Fiona meeting, precedes all her later episodes
- Cheeks of Evil first Kat-Cheeks meeting, precedes Turn The Other Cheeks where they know each other.
- Kat to the Future Part 1 & 2 Coop changed the future where Millie didn't bring Kat home and the Earth was taken over by the Kat Invasion.
- Rebel With A Claw first Kat-Coop-Dennis-Kitten meeting where he ran away to Earth
- Kickin' Butler Coop saw Kat Kommander on the big screen in Kat's Scratching Post Lair.
- Turn The Other Cheeks Lorne and Harvey adopted Cheeks before the first Coop-Dennis-Cheeks meeting, precedes Strange Kat on a Train where Coop knows Cheek's voice already
- It's All In Your Head occurs after a previous episode involving the secret agents since Millie Burtonburger says they are back, referring to a prior encounter when they visited the home, like in Over the Radar
- Mind Games likely precedes other episodes where Millie has exhibited weather-altering powers
- Me Coop, You Kat likely precedes other episodes where Coop has exhibited extreme durability
- The Kat Went Back Part 1 All together Coop-Dennis-Lorne-Harley-Fiona-Millie-Dr.K-Kat Kommander meeting for the first
- The Kat Went Back Part 2 where Coop, Millie, Dennis, Fiona, Lorne and Harvey heard Cheeks's evil laughter in the Kat Prison.
- The Incredible Shrinking Coop occurs on Father's Day
- Hot Dog Day occurs on National Hot Dog Day
- Good Luck Harm occurs on St. Patrick's Day
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