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.
Some owners may be surprised to know that a female Boxer can enter heat relatively early. Boxer dogs typically enter the first heat between the ages of 6 months old and 1 year old. However, some may have it as early as 4 months or as late as 15 months old. If your un-spayed female does not have her first heat by the age of 2 years old, you'll want to alert the veterinarian.