FURVERT!

anthro anus back_muscles backsack ball_lick balls blue_eyes canid canine canis clenched_teeth crouching domestic_dog duo ear_piercing erection eyes_closed flaccid foreskin genitals hair hand_on_butt jaren_(kristakeshi)kristakeshi licking lying male male/male mammal mastiff molosser muscular muscular_anthro muscular_arms muscular_legs muscular_male on_back oral penis perineum piercing puckered_anus red_hair rennin rottweiler sex sitting sitting_on_another smile tail teeth tongue tongue_out vein veiny_penis