rule 34 1boy 2020 animal genitalia animal penis anthro ass backsack balls brown body brown fur crate digitigrade erection fur genitals hand on leg hi res lizet looking back male male only mammal multicolored body multicolored fur murid murine nude penis pose presenting rat red eyes rodent rodent penis sagging balls seductive shephard signature simple background smile smirk solo solo focus two tone body two tone fur whiskers white background wood crate 3901597