My experience with my unneutered male was not good when another neutered male came to stay with us for a short period. I had to keep them separated. My male disliked even this arrangement and would pee in his crate to display his disapproval of having another male in the house. We later had a female pup in the house and our male got along with her great. I aksed for suggestion on how to get them to get along and nothing worked. Someone even said that it might never work.