FURVERT!

absurd_res all_fours anthro anus backsack balls big_balls big_butt bodily_fluids butt dark_sparce erection fur genital_fluids genitals hi_res humanoid_genitalia humanoid_penis inside male mammal murid murine nude penis precum presenting presenting_anus presenting_hindquarters raised_tail rat rear_view rodent solo tail tail_anus white_body white_fur