FURVERT!

1:1 aliena-cordis all_fours animal_genitalia animal_vulva anus ass_to_ass ass_up balls canid canine canine_genitalia canine_vulva duo female feral genitals hi_res knot knot_hanging knot_root knotting larger_female lying male male/female mammal on_back pawpads paws penis penis_backwards raised_tail scar silas_zeranous size_difference smaller_male suspension tail tail_anus vulva