FURVERT!

anal anal_penetration animal_genitalia animal_penis anus anus_expansion balls bodily_fluids canid canine canine_genitalia canine_penis clenched_teeth cum cum_drip deep_penetration digitalfox dripping english_text erection expansion feral fox genital_fluids genitals hi_res knot_in_sheath knotted_tentacle laboratory male mammal penetration penis raised_tail sharp_teeth sheath solo spread_legs spreading srfx18 tail tail_anus teeth text zatch_(sirfox)