an American action animated comedy television series created by Butch Hartman for Nickelodeon. It premiered on October 2, 2010 at 11:00 a.m., on Nickelodeon along with Planet Sheen. T.U.F.F. Puppy is Butch Hartman's third animated series for Nickelodeon, after The Fairly OddParents and Danny Phantom. The series aired its final episode on April 4, 2015.In early 2011, the series was renewed for a second season which premiered on May 13, 2012. The first two seasons consist of 26 episodes each, and the third season consisted of eight episodes, for a total of 60 episodes.The series' main character is a dim-witted but determined dog named Dudley Puppy who works as a spy for an organization called T.U.F.F. (short for Turbo Undercover Fighting Force). His partner is a cat named Kitty Katswell. Other helpers are The Chief and Keswick. The series takes place in the fictional city of Petropolis (distinct from the Brazilian city of PetrĂ³polis, which is the Greek name for St. Petersburg), which is populated by anthropomorphic animals. As a member of T.U.F.F., Dudley Puppy helps Kitty Katswell protect Petropolis from various villains like Verminious Snaptrap, the Chameleon, and Birdbrain. The Turbo Undercover Fighting Force (T.U.F.F.) is an organization that protects Petropolis from crime.

Dudley Puppy (voiced by Jerry Trainor) – He is the heart and soul of T.U.F.F. even though he's depicted as an idiotic, airheaded, hyperactive and loud white and black, mixed-breed dog who usually wears nothing more than a black T-shirt. Despite his lack of common sense he has been proven to be exceedingly clever (i.e. tricking the Chameleon into morphing into a mouse so that Agent Jumbo would jump on him out of fear). Dudley was first discovered by T.U.F.F. when he followed his recently acquired chew toy into D.O.O.M.'s headquarters where he unknowingly defeated Francisco, Bad Dog, and Leather Teddy at the time when Kitty Katswell was pursuing Verminious Snaptrap.