rule 34 2019 adastra anubian jackal barefoot biceps black body black fur black nipples blue eyes bottomwear bulge canid canine canis claws clothing digital media artwork discountgo facial piercing fur happy hi res jackal jewelry looking away male male only mammal markings musclegut muscular muscular male navel neferu adastra nipples nose piercing pecs piercing simple background smile solo thong underwear white background yellow markings zebra stripe 3568599