FURVERT!

1:2 all_fours ambiguous_gender ambiguous_species animal_genitalia animal_penis ass_up balls big_balls big_penis canid canine canine_genitalia canine_penis dominant duo fox genitals grey_fox growth hi_res imminent_sex knot larger_dom male mammal monochrome noonie-beyl notactuallyhere penis progression size_difference size_play urocyon