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My pitbull puppies are different sizes, should I really be concerned?

Updated on September 23rd, 2025

Pet's info: Dog | American Pit Bull Terrier | Male | 2 months and 25 days old | 8 lbs

I have 2 pitbull puppies. There mother was stolen when they were 1 week old. They are 3 months old. I have been nursing them since then. One was bigger than the other when they were born now he is smaller than the otherThey eat the same amount, at the same time. They have been to the vet for there 1st shot and they are schedule for there second. Is there cause for concern.

1 Answer

Most Helpful Answer

Linda G,  MS, DVM

Answered By Linda G, MS, DVM

Veterinarian

Published on October 22nd, 2018

Hello. You have beautiful puppies & have done a great job raising them. If your veterinarian detected no abnormalities in the smaller puppy that concerned him, like a heart murmur or enlarged liver on general palpation, then I would not be concerned at all. Many times a smaller sibling will grow to eventually catch up to or surpass the larger one. I have definitely seen this in the larger breeds such as shepherds & malamutes. But given that nutrition has been the same to both puppies, it may just be a normal genetic difference in the size disparity. Do not worry. Thanks for using Petco Pet Education Center, formerly Petcoach.
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