rule 34 2020 abs anthro areola balls beard big penis biped black beard black hair black nipples body hair bovid bovine brown balls brown penis cattle chest hair crossed arms ear piercing ear ring erection eyebrows facial hair fur genitals glans gradient penis green eyes grey background hair happy trail hi res horn humanoid genitalia humanoid penis incarnata male mammal navel nipples nude open mouth pecs penis piercing pink glans portrait pose pubes red body red fur saburoumaru simple background smile solo standing three quarter portrait vein veiny penis 5373869