The Big ImageBoard (TBIB) - 4:3 anal anal penetration animal genitalia animal penis anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro balls bernese mountain dog big dom small sub black body black fur black nose brown body brown fur canid canine canine penis canis captain (willplay1a) collar dipstick tail doggystyle domestic dog dominant duo eyes closed fangs feral feral on feral feral penetrated feral penetrating feral penetrating feral fox from behind position fur genitals grey body grey fur looking pleasured male male/male male penetrated male penetrating male penetrating male mammal molosser mountain dog multicolored tail open mouth penetration penis penis tip pink penis quadruped sex size difference swiss mountain dog unbreakable-warrior white body white fur