rule 34 3d artwork absurd res animal genitalia animal penis anthro balls bath bathing bathroom bathtub blender software blue hair bovid bovine cattle digital media artwork equine genitalia equine penis genitals grey body hair heim hi res in bath in bathtub jack espresso lidded eyes male mammal medial ring mottled muscular muscular male nipples nude partially submerged penis presenting presenting penis solo water wet 7402643