> I have come to the conclusion that there's absolutely no rhyme nor reason to who gets on with whom based on gender or neutered status.
I agree all the way on this one. I have males, entire and castrated. I have females, spayed and entire. They are all house dogs, and I
expect them to get on.
Sometimes, owners themselves can create a problem, simply by transferring their anxiety to the dogs. If I didn't have a houseful, and could only keep 2 dogs, I guess I would choose two males, simply because I find them more affectionate. My 3 entire boys (2 different toy breeds), are put together in a 4ft crate at night when I have girls in season. I understand that is a total no, no, as they will fight.
Mine haven't read the book, and clean each others eyes, and eat out of the same large bowl.