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Should a 5-week pregnant Jack Russell show noticeable weight gain?

Updated On September 23rd, 2025

Pet's info: Dog | Jack Russell Terrier | Female | unspayed | 2 years and 2 months old | 10.3617 lbs

What is the average weight gain for a 5 week pregnant miniature jack russell. She weighed 4.2kg in Feb 2018 and only put on .1kg from 5 months previous to that. She now weighs 4.7kg and this has only been noticeable since she was mated 5 weeks ago, please help

1 Answer

Most Helpful Answer

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Answered By Laura Johnson VMD

Veterinarian

Published on October 5th, 2018

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! Weight gain and outward signs of pregnancy is dogs and cats doesn't become evident until 5-6 weeks so I wouldn't worry yet. If you have a Vet who is able to do ultrasound then maybe they can confirm pregnancy for you. Otherwise you would need to weight until day 50-55 for an X-ray. I wish you the best!

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