rule 34 2013 5 fingers animal genitalia anthro balls belly biped black balls black fur black hooves black tail brown belly brown fur brown mane brown nipples digital media artwork ear piercing equine facial piercing feathering front view full length portrait fur furgonomics furry specific piercing genital piercing gradient background green eyes hi res holding object hooves humanoid hands industrial piercing lip piercing male male only mammal mane multicolored fur nathradas nipple piercing nipples nose piercing nose ring nude othello play penis penis piercing penis tip piercing portrait prince albert piercing septum piercing sheath sheath piercing signature simple background sitting skull snout sofa solo vasmeth 2556063