FURVERT!

2007 ambiguous_gender anthro anus balls brown_body brown_fur brown_hair butt canid canine canis claws colored dangling domestic_cat duo erection extreme_size_difference feet felid feline felis forest forest_background fur genitals grass grey_body grey_fur hair half-erect holding_on jeri_kleinlowe long_hair lying macro male male/ambiguous mammal micro nature nature_background navel nipples on_back orange_body orange_fur outside penis perineum pink_anus plant size_difference smile tail toes tree wolf