Lou (Cats & Dogs)

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Lou is a beagle and the canine protagonist of Cats & Dogs.

The inexperienced Lou is picked by young Scott Brody as a pet. Once esconced at the Brody house, he learns that he's expected to help protect his master and his family from the evil Mr. Tinkles. Butch served as his mentor and sidekick.

Lou appears in the sequel, Cats & Dogs: The Revenge of Kitty Galore, as a supporting character. His lead character role was replaced by a German Shepherd named Diggs.