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4:3 anthro anus backsack balls big_butt black_hair bodily_fluids butt canid canine cozymun detailed_background dialogue english_text fur genitals grey_body grey_fur hair heart_symbol hi_res highlights_(coloring)huge_butt inside inviting male mammal nude perineum presenting presenting_anus presenting_hindquarters purple_anus sauna seductive solo sweat sweaty_butt tail tail_aside text