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Enter director James Gunn, who shared a photo of himself posing with the dog who played Cosmo (in costume) in recognition of National Dog Day.
In honor of #NationalDogDay here’s a photo of me and my 2nd favorite dog in the universe. #cosmo… https://t.co/obxxGbf4ZB
— James Gunn (@JamesGunn) August 26, 2014
You’ll see that he posted that Cosmo is his second favorite dog; his first would obviously be his own dog, Von Spears, who also had a cameo in Guardians of the Galaxy.