FURVERT!

almost_fully_inside anal anal_vore anthro anus avian balls bernese_mountain_dog big_balls bird black_border bodily_fluids body_invasion border butt canid canine canis clothing cock_vore domestic_dog duo extreme_size_difference feet_first fully_inside genitals group head_first looking_back looking_pleasured male male/male male_pred mammal many_prey_at_once molosser mountain_dog multiple_penetration multiple_prey oral_vore partially_inside penile penis raised_tail rodent saliva sillywerwolf size_difference slightly_chubby spread_butt spreading swiss_mountain_dog tail three_prey_same_hole vore willing_prey wolf