Rule 34 Dev - anthro anus backsack balls big_butt butt butt_grab erection feet fur genitals gradient_background grin hand_on_butt hindpaw looking_at_viewer male nude paws penis presenting presenting_hindquarters simple_background smile solo tail toes wolfbread noah_(wolfbread) canid canine canis domestic_dog mammal 3:4 digital_media_(artwork)|20180233325