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How big will my 6-week-old mixed breed puppy get as an adult?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | 1 month and 18 days old | 8.9 lbs

My puppy is 6weeks old and weighs 8.9lbs - can u estimate how big she will get? Her mom is pompek, dad unknown

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1 Answer

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Answered By Anna M., DVM

Veterinarian

Published on July 3rd, 2017

Cute puppy! I wonder if she has some herding breed in her with those white feet... At this age it's pretty tough to offer any kind of accurate guess. There's no perfect prediction, but a general guideline is that at 3 months of age (~12 weeks) puppies tend to be about 1/3 of their adult weight, and at 4 months of age (~16 weeks) they tend to be about 1/2 of their adult weight. So, if you hold off a few more weeks, once Luna is about 3 months old we can start to get a bit of a better idea! Hope that helps!

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