FURVERT!

2014 akkusky animal_genitalia animal_penis anthro anus ass_up backsack balls biped black_hair blue_eyes blue_markings blue_penis butt canid canine canine_genitalia canine_penis erection fur genitals grey_body grey_fur grin hair knot looking_at_viewer looking_back lying male mammal markings nude on_front penis presenting presenting_anus presenting_hindquarters raised_tail sheath simple_background smile solo spread_butt spreading tail white_background