If you’re a dog owner, understanding how long are dogs pregnant is essential for proper care. On average, How Long Are Dogs Pregnant a dog’s pregnancy lasts about 63 days, but it can range from 58 to 68 days depending on the breed. During this time, provide proper nutrition, regular vet check-ups, and a comfortable environment for your expecting pet. Signs of pregnancy include weight gain, nesting behavior, and appetite changes. Knowing the timeline helps you prepare for the arrival of adorable puppies!