Backstage at the Film Independent Spirit Awards, Christopher Plummer (who vies for the Oscar tomorrow) celebrated his Best Supporting Actor win for Beginners and gleefully stoked the fires of a pup vs. pup beef between his own co-star in the film, Cosmo, and The Artist's award season favorite Uggie. "We had a little private talk," he explained of scene-stealer Cosmo. "Now that you mention it, I think our Cosmo was much more human than Uggie. Uggie was just a trickster. Our dog had soul." Fighting words!