Rule 34 Dev - 2011 4_toes anal anal_knotting anal_sex animal_genitalia animal_penis anthro anthro_on_anthro anthro_penetrated anthro_penetrating anthro_penetrating_anthro ass balls biped black_nose blue_eyes bodily_fluids brother brothers brown_eyes canid canine canine_penis canis claws cum cum_in_ass cum_inside cum_on_arm cum_on_chest cum_on_leg cum_on_self cutaway cute_fangs darkgoose dershep detailed_background domestic_dog duo erection eye_contact fangs fur furry_only genital_fluids handjob incest inside internal knot knotting lavshep looking_at_another looking_at_partner male male/male male_penetrated male_penetrating mammal multicolored_fur no_humans open_mouth open_smile penetration penile penis pink_tongue purple_fur purple_penis sex sheath sibling slim smile sofa tan_fur teeth toe_claws toes tongue twincest twins watermark|3683396584