Petco Text Logo
Petco Pet Logo

My dog's shoulder bump has a black scab that won't heal. What is it?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | neutered | 7 years and 3 months old | 90 lbs

Small bump on my dog's shoulder forms black scab over again. After I put antibiotic cream (which softens it) and I wipe off the scab, It comes back.

This question includes photos that may contain sensitive content. Click to view.

View more to consider that the photos may include sensitive content.

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on March 25th, 2019

This lump requires ideally an immediate check up to determine its underlying nature. Given the treatment failure it is unlikely to be caused by an infection, and differentials would include skin cysts and benign or more malignant type of tumors. Your vet will probably take some samples from it to analyse the type of cells in it.

Vote icon

2Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored