Rule 34 Dev - 2022 anal anthro anus ass bed border bottomless brother brothers canid canine canis closed_eyes clothed clothing digital_media_(artwork) erection eyebrows eyewear father father_and_child father_and_son foursome fur furniture gangbang genitals glasses grey_body grey_fur group group_sex half-closed_eyes handjob hi_res hickeybickeyboo humanoid_genitalia humanoid_penis inside looking_pleasured male male/male mammal masturbation mature_anthro mature_male musclegut muscular muscular_anthro muscular_male narrowed_eyes nipples on_bed open_mouth open_smile oral parent parent_and_child penile penile_masturbation penis perineum rimming sex shirt shirt_only sibling smile son teeth tongue topwear topwear_only white_border wolf|7761543160