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.
The dog's pregnancy will last between 58-68 days, with 63 days being the norm. One of the first ways that you can tell that your female is pregnant is to look at her abdomen. The stomach area will swell and depending on the size of the litter, will be quite larger than usual as the pregnancy progresses.