abs animal_genitalia animal_penis anthro balls biceps big_penis biped black_body black_fur black_nose canine_genitalia canine_penis claws erection fangs finger_claws fingers fur genitals glistening glistening_genitalia glistening_penis grey_body grey_fur knot male male_anthro muscular muscular_anthro muscular_male navel neck_tuft nude nude_male pawpads pecs penis pink_penis presenting presenting_penis sheath simple_background smile solo standing teeth tuft vein white_background bela987 canid canine canis mammal wolf absurd_res hi_res shaded