How to tell if a dog is pregnant?
Expert Answer
After a dog becomes pregnant it will stop going into heat, but early symptoms are usually not obvious. After some time, the dog will show sleepiness, increased appetite, enlarged nipples, and a larger abdominal girth, and a few dogs may have morning sickness that does not last long. In addition, pregnant dogs are generally sensitive and easily angered; if someone tries to touch the belly, the dog will react very strongly.
About one month after mating and the appearance of pregnancy symptoms, the owner can take the dog to a veterinary hospital for a B-ultrasound to confirm the pregnancy and observe fetal development.