Rule 34 Dev - 2016 age_difference ambiguous_species anthro anthro_on_anthro anus ass backsack balls biped black_penis blue_eyes border canine cheek_tuft circumcised dipstick_tail duo erection eyebrows_visible_through_hair eyes_visible_through_hair faceless_male flaccid foreskin freckles fur grey_fur hair humanoid_penis imminent_sex log_(artist) looking_at_partner looking_back lying male mammal multicolored_fur multicolored_tail nude older_male on_side open_mouth penis penis_size_difference perineum pink_background pink_fur pink_hair pink_nose raised_tail signature simple_background solo_focus tuft two_tone_fur uncut vein veiny_penis white_border white_fur yaoi young younger_male|3170502152