Rule34https://rule34.xxx/index.php?page=atom&tags=2017 absurd res anthro anus ass back muscles backsack balls biceps biped black background blue eyes crouching digital media (artwork) equine full-length portrait grass greyscale hi res hooves horse looking at viewer looking back male male only mammal mane monochrome muscular muscular male nude perineum portrait rear view riche signature simple background solo spot color underhoof venlightchaser2024-05-06T22:44:34ZRule34