all_fours anthro anus backsack balls bent_over blue_eyes brown_hair butt erection fluffy fluffy_tail fur genitals grey_body grey_fur hair humanoid_genitalia humanoid_penis looking_at_viewer looking_back male muscular muscular_anthro muscular_male nude open_mouth outside penis plant presenting presenting_anus presenting_hindquarters seaside smile solo sunset tree white_body white_fur bmrwcl canid canine canis mammal wolf