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How significant is puppy growth in the last week of dog pregnancy?

Updated on September 23, 2025

We have a pregnant springer spaniel, today makes day 59. The dad is a cocker spaniel. How much larger can a puppy grow the last week of gestation? Is it a significant size increase the last week of gestation for a dog?

1 Answer

Most Helpful Answer

Sara Farmer, DVM

Answered By Sara Farmer, DVM

Veterinarian

Published on January 9, 2019

Puppies definitely continue to grow the last week of gestation and there are important developments that continue to occur, particularly with the lungs. It's difficult to say exactly how much - we don't have a good way to estimate a puppy's actual weight or size with ultrasound or x-rays like in people.
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