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My 3-week-old puppy has a grape-sized lump on his neck. Is it serious?

Updated On September 23rd, 2025

Pet's info: Dog | Pit Bull Terrier | Male | 21 days old | 2 lbs

3 week old puppy has a grape size lump on his neck close to his jaw line just popped up today

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1 Answer

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Answered By Lauren Barry, BVSc, MRCVS, DVM

Veterinarian

Published on July 20th, 2017

From the location my best guess would be an enlarged lymph node - this could be confirmed on a physical exam performed by your vet. Lymph nodes are where his immune system is stored and can become enlarged when Luicus is fighting an infection, or inflammation. It may be best to have him examined tomorrow to check he's not running a fever.

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