rule 34 anthro big penis border collie canid canine canis collie comparing comparing penis domestic duo erection felid feline genitals herding hi res humanoid genitalia humanoid penis male malemale mammal mason trivolmckenley muscular muscular male nexus pastoral penis sheep unknown character 9300139

Rule34 imageboard anthro big penis border collie canid canine canis collie comparing comparing penis domestic dog duo erection felid feline genitals herding dog hi res humanoid genitalia humanoid penis male male/male mammal mason (trivolmckenley) muscular muscular male nexus pastoral dog penis sheepdog unknown character