rule 34 2023 belly blep blue background canid canine claws colored digital drawing artwork digital media artwork female feral fluffy fox genitals green eyes guide lines hair humanoid genitalia humanoid genitalia on feral k0ira long tail looking at viewer lying mammal navel neck tuft on back pawpads paws presenting pussy shaded simple background smile solo spread legs spreading tail tongue tongue out tuft white background 8689366