This of course is not about me. I'm asking for a friend. She has a male pup that she found out has demo mange. The vet told her that once it is cleared up that he will be ok to breed. Now I don't agree with breeding this dog at all, demo mange or not. I think all animals with demo mange should be spayed or neutered. Now I know that the mother passes the mange mites to the pups, and the pups that are born from a demo mange dam will develop it do to a low immune system. My friend says that her dogs full littermate sister does not have the demo mange. And the vet said her dog only has it because he is blue, and therefore his immune system is weaker. So do males pass on the gene to the pups to be predisposed to the mange? Thank you.