Watch Dreams About Stray Cats (2021) : Full Movie Online Free “Do you know what I’ve always wanted to find out, brother? Where do you get your ideas for your drawings?” director David Sís asks his older brother Petr at the beginning of the film. He doesn’t get an answer right away, but perhaps it can be found in this documentary that, with great care, traces the highly successful career of a talented and multifaceted artist whose work crosses generational and geographic boundaries.