By the way infertility is common in between the human beings. But this problem also seems to be in Dogs also. Some bitches are unable to reproduce.
It means that there are some female dogs that cannot get pregnant. They are able to successfully mate with a male dog. This problem is found more in older age of female dogs.
The most common factor is uterine cysts which is very popular in dogs. Sometime male infertility factor is also responsible for inability to reproduce. This problem can be diagnosis with the help of reproductive infertility treatment in India by the doctors. Dog's hormones will be examined by the doctors and then they will suggest you to follow which treatment so that your dog gets pregnant without any complications.