A Hollywood superstar pup takes on a bird hunter, a talented pit bull goes up against a punk rock border poo, and two K9s named after movie villains face off.

A 17-pound underdog takes on a protective Czech shepherd, two K9s from the same department duke it out, a therapy dog goes against the smallest dog of the season, and in the Doghouse, one dog gets disqualified for the first time in Top Dog history.

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A female K9 aims to dominate her male opponent; three Belgian Malinois give their handlers a workout; and an old contender shows up to prove that age ain't nothing but a number.

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A frisbee-catching pro takes on a demo dog. A female K9 goes up against a tall dog.

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