FURVERT!

anthro anus backsack balls bent_over bodily_fluids butt canid canine canis domestic_dog dripping erection genital_fluids genitals grey_background greyscale hi_res looking_through looking_through_legs low-angle_view male mammal monochrome muscular muscular_anthro muscular_male muscular_thighs penis perineum precum precum_drip presenting presenting_anus presenting_hindquarters raised_tail rear_view simple_background solo spread_anus spread_butt spreading standing tail vein veiny_penis whireds whireds_(character)