anthro anus ass_up backsack balls brown_eyes butt flaccid foreskin fur genitals humanoid_genitalia humanoid_penis looking_back lying male nude on_all_fours on_front orange_body orange_fur penis perineum presenting presenting_hindquarters raised_tail simple_background smile smirk solo spread_butt spreading striped_body stripes tail_tuft tan_body tan_fur tuft picometer ratchet lombax mammal