Rule 34 Dev - anthro barbell biceps bodily_fluids brown_body bulge dog_tags exercise grey_background horn lactating male male_lactation muscular muscular_anthro muscular_male nipples pecs quads simple_background solo squats tattoo weightlifting workout wrestling_singlet monstadog indigo_the_bullpup bovid bovine canid canine canis cattle domestic_dog hybrid mammal 2020|10800154295