Rule 34 Dev - anal anal_penetration anthro anthro_on_anthro balls collar cutaway duo erection genitals hair knot knotting male male/male muscular nipples nude penetration penile penile_penetration penis_in_ass sex xenoforge leios peable bull_terrier canid canine canis domestic_dog hunting_dog mammal terrier 2019 4:3 absurd_res hi_res|22625570065