rule 34 2023 ambiguous gender anthro ass avali avian b4llistikb34n bed bed sheet bedding claws crossed legs curved claws digital media artwork feathers feet foot focus furniture green body green feathers hi res hindpaw lying multicolored body multicolored feathers nonbinary lore nude on front paws perineum signature soles solo suggestive tail tail feathers toe claws toes white claws 9229487