FURVERT!

anal anal_vore anthro anus backsack balls big_anus big_butt black_anus bodily_fluids butt canid canine canis duo genital_fluids genitals half-erect hi_res humanoid_genitalia humanoid_penis justmegabenewell larger_male looking_back male mammal nude penis perineum precum presenting presenting_hindquarters puffy_anus size_difference smaller_male sweat vore wolf