FURVERT!

16:9 all_fours animal_genitalia animal_penis back_cracking bodily_fluids canid canine canine_genitalia canine_penis canis claws dewclaw erection eyes_closed feral feral_transformation genital_fluids genitals hair human human_to_feral leaking_precum line_art male mammal masturbation mid_transformation monochrome moonandwolf motion_lines muscular nude open_mouth paws pelvic_thrust penis precum rounded_back shaking sheath simple_background solo species_transformation tail tail_between_legs tail_fetish tail_masturbation tail_play teeth tongue tongue_out transformation tremble_spikes trembling vein veiny_penis vertebrae widescreen wolf