2018 absurd_res animal_genitalia animal_penis anthro anus backsack balls bed big_balls black_body black_fur butt canine canine_penis digital_media_(artwork) dog embarrassed erection fan_character fur hi_res looking_at_viewer lying lying_on_bed male mammal muscular penis pillow presenting presenting_anus presenting_hindquarters presenting_penis raised_tail rear_view rk solo spreading were werewolf wolf