With a population of about 100 million people, the Philippines is the seventh-most populated country in Asia and the 12th most populated country in the world. An additional 12 million Filipinos live overseas, comprising one of the world's largest diasporas.
The Reproductive Cycle in Dogs. In order to answer the question, how long are dogs pregnant, you first need to understand the dog reproductive cycle. Intact female dogs go into heat approximately every six months, although this can vary depending on the dog and the breed. The heat cycle lasts 18-to-21 days and is broken into four distinct stages.
A veterinarian should give your mama dog a prenatal exam. Female dogs are pregnant for 56 to 66 days before giving birth. Multiple complications can occur throughout the gestation period. Prenatal care is very important to the health of your dog and her puppies. Schedule a prenatal visit with your veterinarian two to three weeks after breeding; the vet can alert you to potential problems and give you instructions on how to care for your pregnant dog and her unborn puppies.