FURVERT!

4_legs animal_genitalia animal_penis balls bernese_mountain_dog black_body black_fur blush canid canine canine_genitalia canine_penis canis countershading dipstick_limbs dipstick_tail domestic_dog erection feral fur genitals grey_background kerchief knot male mammal markings molosser mostly_nude mountain_dog neckerchief neckwear neckwear_only one_leg_up penis presenting presenting_penis quadruped raised_leg red_eyes simple_background solo standing swiss_mountain_dog tail tail_markings tsukune_minaga white_body white_countershading