Main Characters
- Dudley Puppy (last appearance)
- Kitty Katswell (last appearance)
- Keswick (last appearance)
- The Chief (last appearance)
- Verminious Snaptrap (last appearance)
Cameos/Minor Characters
Prev. Ep.'s Appearances /// Stressed To Kill's Appearances \\\ Next Ep.'s Appearances
| << Season 2 | ♦ Season 3 Appearances ♦ | ||||||||||||||
| #01 | Subliminal Criminal | #12 | House Broken | #23 | Girlfriend or Foe? | #34 | Soar Loser | ||||||||
| #02 | Acting TUFF | #13 | Dancin' Machine | #24 | Scared Wit-Less | #35 | Dead or a Lie | ||||||||
| #03 | TUFF Sell | #14 | The Good, the Bad, and the Quacky | #25 | Barking Bad | #36 | Tourist Trap | ||||||||
| #04 | Tattle Tale | #15 | Pup Goes the Weasel | #26 | Smarty Pants | #37 | Puff Puppy | ||||||||
| #05 | A Tale of Two Kitties | #16 | Puppy Pause | #27 | Great Scott | #38 | Stressed to Kill | ||||||||
| #06 | Pup in the Air | #17 | Sheep Dog | #28 | To Be Or Not To Bee | #39 | T.U.F.F. Break Up | ||||||||
| #07 | True Spies | #18 | Mom's Away | #29 | While The Cats Away | ||||||||||
| #08 | Bagel and the Beast | #19 | Crime Takes a Holiday | #30 | Sweet Revenge | ||||||||||
| #09 | Mud with Power | #20 | Flower Power | #31 | Hide and Ghost Seek | ||||||||||
| #10 | Legal Beagle | #21 | Match Me If You Can | #32 | Cod Squad | ||||||||||
| #11 | The Spelling Bee | #22 | Organized Crime | #33 | T.U.F.F. Love | ||||||||||