100 Years of Famous DogsFrom the Wizard of Oz's Toto to the real Marley from Marley & Me, here's a look at some of our favorite history-making canines.

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TYSON

One of the earliest YouTube stars, this three-year-old bulldog skateboarded his way to fame in 2004. Videos of Tyson riding his board up and down the Venice, Calif. boardwalk earned him an appearance on Oprah and a spot in the Rose Bowl Parade.