Rule 34 Dev - anthro anus ass backsack ball ball_gag balls bernese_mountain_dog canid canine canis collar cum cum_in_ass cum_inside cum_leaking cum_on_butt domestic_dog gag gagged gay hi_res hindpaw ill_dingo leash male mammal paws petplay presenting presenting_hindquarters roleplay solo tennis_ball tennis_ball_gag yaoi|3519113040