I'm not sure about you guys, but I was surprised to see Cosmo played by an actual dog (instead of being brought to life through CGI like Rocket Raccoon and Howard the Duck), though it was just a fun cameo. Perhaps we'll see the Soviet pooch make a return - and telepathically talk - in the sequel? Starring Chris Pratt, Zoe Saldana, Dave Bautista, Bradley Cooper, Vin Diesel, Lee Pace, Michael Rooker, Karen Gilian, John C. Reilly, Glenn Close and Benicio del Toro, Guardians of the Galaxy is out now! What did you guys think of the movie and Cosmo's cameo?