Amanda Seyfried may be starring in Les Misérables alongside Anne Hathaway, Helena Bonham Carter, Russell Crowe, Hugh Jackman, and Sasha Baron Cohen, but we know that her favorite co-star is her four-legged friend, Finn. Check out this video of them, and be sure to stick around until the 50-second mark for a serious LOL moment!

Photo: Thelonius/Splash News