Rule 34 Dev - 2013 4_toes all_fours anal anal_sex anthro ass biceps black_fur black_nose black_penis blue_fur canine clef clenched_teeth closed_eyes cum cum_on_ass curtains cutaway erection fingerless_gloves fur furry furry_only gay gloves hindpaw looking_at_viewer looking_back male moan musical_instrument no_humans nude paws penetration penis piano sex teeth tongue tongue_out trivol wfa white_fur wolf yellow_eyes yellow_fur|1603219328