FURVERT!

2012 3_toes 4_toes abstract_background animal_genitalia animal_penis anthro anus backsack balls biped black_body black_fur black_nose blue_body blue_fur blue_markings blue_pawpads butt canid canine canine_genitalia canine_penis canis claws condom digitigrade domestic_dog erection feet fur genitals gradient_background hindpaw inuki knot leg_markings legs_up looking_at_viewer lying male mammal markings nude on_back pawpads paws penis pose presenting presenting_hindquarters purple_eyes sexual_barrier_device simple_background smile socks_(marking)soles solo spread_legs spreading tail toe_claws toes tongue tongue_out