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 dog's pregnancy lasts, on an average, 63 days. It would be hard to say when your dog will show. Each dog is different, just like each person. The best thing to do, is take her to the vet when you think she would be about half way through the pregnancy and have an ultrasound done. So, about 30 days from the day she was bred, she should go.