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My 4-month-old puppy has a hard pink bump on his back. Is it serious?

Updated On September 23rd, 2025

Pet's info: Dog | Cavalier King Charles Spaniel | Male | unneutered | 4 months and 21 days old | 15.5 lbs

I’m concerned about a bump I found on my 4.5-month old Cavalier puppy. It’s right below his right shoulder blade on his back, is hard, is about 8mm round, and is pink in color. It looks like a skin tumor; is that even possible for such a young dog? Should I be worried? His next vet appointment isn’t scheduled until he’s 6 months.

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1 Answer

Most Helpful Answer

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Answered By Rodrigo Roca, DVM

Veterinarian

Published on March 20th, 2019

Hello, thank you for your question about Wallace. Based on the photo that you've attached and your description of the lesion I would not be overly concerned about this. It is possible that it is a cyst or a build of debris within the hair follicle/sweat gland. If it continues to get bigger, it develops a colored/odorous discharge, or Wallace begins to itch at the area it is possible that it could be infected. If this happens I would recommend having Wallace seen by your veterinarian. Hope this helps!

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