rule 34 2000 animal genitalia anthro backdrop balls blue body blue fur domestic cat erection felid feline felis full length portrait fur furniture genitals green eyes guppy guppy artist humanoid genitalia humanoid penis hybrid genitalia hybrid penis male mammal navel nude penis pink nose pink penis plantar flexion plantigrade portrait pose sheath sheathed humanoid penis signature sitting smile solo stool traditional media artwork 5409849