Petco Text Logo
Petco Pet Logo

My puppy has an internal lump. What could it be and should I worry?

Updated On September 23rd, 2025

Pet's info: Dog | Golden Retriever | Female | unspayed | 3 months and 20 days old | 23 lbs

There is a bump on my puppy but it's not on the outside it's inside. She had roundworm I don't know if that would cause it. When she sits you can really feel it but not so much when she is laying down or standing. Can you please tell me what you think it is.

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on February 6th, 2017

In a young puppy like Daisy, this bump is more likely a cyst or a benign tumor. Roundworms infect the the intestines of puppies, so they couldn't be the cause of this bump. I would have her seen by a vet tomorrow. The vet can perform a test called a fine needle aspirate on it. To do this, the vet sticks a small needle into the bump to get a sample of it's cells, and examines the cells on a slide under a microscope. It's usually painless to the animal, and relatively quick to perform. The vet can diagnose what is causing this bump so it can be treated.

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