rule 34 2018 anonym0use anthro anus ass backsack ball tuft balls big butt bubble butt canid canine canis digital drawing artwork digital media artwork digitigrade eyewear eyewear only fluffy foreskin fur genitals glasses glasses only half erect looking at viewer looking back male mammal monochrome muscular muscular anthro muscular male nova anonym0use nova disambiguation nude pantheradraws penis perineum presenting presenting anus raised tail rear view rowrow solo spread butt spreading sxfpantera thick thighs tuft wolf 7000572