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.
So if you suspect a pregnancy in your dog, here is some helpful information to help you on your way. Gestation Period for Dogs: How Long is a Dog Pregnant. The pregnancy period of a bitch lasts for around sixty to sixty four days or approximately nine weeks. This time period may vary based on the dog and the size of her litter.