My dog has a soft lump under its jaw overnight. What should I do?
Updated On September 23rd, 2025
Pet's info: Dog | Boston Terrier | Male | neutered | 30 lbs
Dog has soft lump under jaw/neck appeared over night.
3 Answers
Most Helpful Answer
Published on March 25th, 2018
Good morning. If it is towards the back of the jaw it could be an enlarged lymph node or salivary gland. Other possible causes are an abscess or tumor. In young dogs we see a lot of abscesses in that area because they are chewing on sticks or other things and they can puncture the oral tissue and cause an abscess under the jaw. I would highly encourage you to have him evaluated by your veterinarian soon. A needle aspirate may be done to help determine the diagnosis and treatment plan. Best of luck and I hope he improves soon. Thank you for using Pet Coach.
1Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on December 7th, 2017
Thanks for using Petco Pet Education Center, formerly Petcoach! If only on one side, this could be due to an abscess for example. I recommend that you have Doc evaluated by your veterinarian for further assessment and treatment. If this is confirmed to be an abscess, they may drain it and then prescribe antibiotics. Good luck!
1Pet Parents found this answer helpful
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Published on July 1st, 2017
At that age a salivary problem is not common but always a possibility. It may be a small abscess or fibrous tissue from where it is trying to heal. If this is not painful and he is able to eat and drink I would monito it for any changes. If it gets bigger or starts to drain or he stops eating then I would take him to your vet.
1Pet Parents found this answer helpful
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