In the event of a major disaster or other emergency, the OCC may grant approval for a temporary branch. Such approvals reflect the particular circumstances and generally permit operation for six months, unless the OCC grants an extension.
Report Abuse. anywhere from 6 months to 8 months. If they get pregnant when they have their first heat the dog will be at a higher rate of having severe problems with the litter of puppies. It is really risky, and really dangerous for your dog.
Many times the dog's heat cycle, better known as estrous cycle, seems to be quite unpredictable. The first heat generally occurs around six months in small, medium dogs and around 12-18 months in larger breed dogs. However, It is not unheard of some giant dog breeds going into heat at around 30 months of age.