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abs aduran animal_genitalia animal_penis animated animated_gif anthro arm_tuft balls becoming_erect bed chest_tuft ear_piercing ear_ring elbow_tuft equine_genitalia equine_penis erection felid front_view furniture genitals hands_behind_head looking_at_viewer male male_anthro mammal mane monochrome mouth_closed navel nude on_bed pecs penis piercing pillow ring_piercing short_playtime sketch solo spread_legs spreading stripes tuft yrvel_(uchoa)