anal anal_penetration anus bestiality bodily_fluids duo feral feral_penetrating feral_penetrating_human feral_penetrating_male human_on_feral human_penetrated interspecies male male/male male_on_feral male_on_human male_penetrated male_penetrating male_penetrating_human male_penetrating_male musk penetration sex sweat canid canine canis domestic_dog human mammal mastiff molosser rottweiler