Updated On September 23rd, 2025
Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | unspayed | 4 months and 3 days old | 21 lbs
Hello, our 4 month puppy developed a bump about the size of half a small rubber bouncy ball on the underside of her jaw. It happened in a matter of few hours and seems to have maybe shrunk a little in the last 24 hours. It hasn't affected her mood and causes her no pain. Any ides?
1 Answer
Published on June 21st, 2018
Hi and thank you for using Petco Pet Education Center, formerly Petcoach! I notice the bump on Clover but unfortunately, it is generally impossible to tell what the lump is based on appearance alone. It can be anything from a bug bite (especially since it has gotten smaller), a mass, an abscess, a cyst, a salivary gland or something else. If it is not bothering her right now and does not get bigger, I would monitor her. If it is still there in the morning, I would contact your veterinarian. Your vet may want to feel the area and determine if additional diagnostics are warranted such as a fine needle aspirate OR something else if it does not seem like a mass/cyst/abscess. Good luck!
1Pet Parents found this answer helpful
Book an appointment with the pros – our expert vets are here to help.