The Party Celebrity fur was flying at the Animal Health Institute’s 15th annual Celebrity Pet Night on Capitol Hill, which honored Uggie, the Jack Russell terrier who played Jack in The Artist, and Tennessee, the cat who played Buttercup in The Hunger Games.The People Members of Congress and their staffers mugged with the mutts at one of the Hill’s most popular—and bipartisan—events. Best in Show Dietrich the Labrador beat all the other pet candidates in the Cutest Pets on Capitol Hill photo contest.Photography by Tessa Bajema