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2009 ac_artwork angello angello_cauich anthro balls black_sheep blush border_collie bovid bovine breasts butt canid canine canis caprine collie domestic_dog domestic_sheep duo erection eyes_closed fellatio female genitals glans hair hay herding_dog interspecies long_hair male male/female mammal nipples nude oral pastoral_dog penile penis purple_hair sex sheep sheepdog side_boob sideways_oral tail teeth vulva