The Big ImageBoard (TBIB) - 69 position anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro balls black balls black body black ears blue eyes brown balls brown body brown ears brown inner ear brown nipples canid canine canis collar dobermann domestic dog duo erection genitals glistening glistening eyes klaus doberman (character) lying male male/male male penetrated male penetrating male penetrating male mammal markings muscular muscular anthro muscular male ninetht nipples nude on back oral oral penetration penetration penis penis in mouth pink penis pinscher red collar red markings sex simple background spread legs spreading tan body two tone collar yellow collar