FURVERT!

ambiguous_gender ambiguous_on_anthro animal_genitalia animal_penis anthro anthro_on_feral anthro_penetrating anthro_penetrating_feral basic_sequence becoming_erect bestiality canid canine canine_genitalia canine_penis deep_throat detached_sheath duo erection fellatio feral feral_penetrated four_frame_image four_frame_sequence fully_sheathed genitals graphite_(artwork)greyscale half-erect hi_res intraspecies intraspecies_bestiality knot knot_in_sheath knotting licking linear_sequence male male/ambiguous male_on_feral mammal monochrome oral oral_knotting oral_penetration paper-wings penetration penile penis penis_lick sequence sex sheath side_view sketch three_frame_image three_frame_sequence tongue tongue_out traditional_media_(artwork)unsheathing