FURVERT!

anon anthro anthro_penetrated avian bird duo eyes_closed faceless_character faceless_human faceless_male feet female female_on_human female_penetrated fourssss from_front_position hirundinid human human_on_anthro human_penetrating human_penetrating_anthro interspecies larger_human larger_male lying male male/female male_on_anthro male_penetrating male_penetrating_female mammal on_back oscine passerine penetration penile penile_penetration penis_in_vagina rough_sex sega sex simple_background size_difference smaller_anthro smaller_female smaller_penetrated sonic_riders sonic_the_hedgehog_(series)standing swallow_(bird)talons toes vaginal vaginal_penetration wave_the_swallow white_background