Ruff Ruff McDogg is a nested fictional character in the Yu-Gi-Oh! manga and anime. He is from the cartoon Funny Bunny. Ruff Ruff is a bulldog police officer and antagonist to Funny Bunny.

In the entrance to the cartoon, Ruff Ruff fires 26,000 bullets at Funny Bunny, all of which were dodged. In 3013 episodes, he never managed to catch Funny Bunny.

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