
I would agree with this. If the other male is alpha then your maiden dog might not mate any of your bitches. The only other thing it might be is that the dog just does not like the bitch, although this does usually tend to be more of a bitch problem. Having had a champion bitch in a large kennel where I worked, we could never get this bitch to mate with any dog, from the kennel or from other kennels. I noticed that every day on the way past the kennel of the dog which had been returned to us, she would stop and lick him through the wire. He was not the best specimen of his breed, but she obviously liked him. So in a final attempt to get some progeny from this bitch, we let her and the returned dog get together, and she she stood perfectly. We got two puppies one was made up to a champion, the other was equally good but had been sold to a pet home, so was never shown.