Man's best friend. We're celebrating #NationalDogDay with some of our favorite artist-doggo duos. Swipe 🔙 to explore. (1) #DavidHockney (2) #AndyWarhol (3) #PabloPicasso (4) #HenriMatisse (5) #LucienFreud (6) #JacksonPollock (7) #ClaesOldenburg