Rule 34 Dev - anal animated anthro ass backsack balls bernese bodily_fluids border_collie canid canine canis clenched_teeth close-up collie corporalcathead_(artist) cum cum_inside cum_on_butt domestic_dog duo genital_fluids herding_dog knot knotting male mammal nude pastoral_dog rear_view sex sheepdog teeth throbbing yaoi|3650116648