Petco Text Logo
Petco Pet Logo

  • Two Easy Ways to Start Earning Rewards!

My cat has a growing, dark, hard lump on his neck. What should I do?

Updated On September 23rd, 2025

Pet's info: Cat | American Shorthair | Male | neutered

My cat has a hard lump on his neck that keeps growing in size. It has a small opening now. It’s not draining anything and is dark inside.

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

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

2 Answers

Most Helpful Answer

Image profile

Answered By Megan, DVM, CVA

Veterinarian

Published on December 22nd, 2017

Poor Murphy! This could be a parasite, an infection, or a tumor that has ruptured. Since it is getting larger, I would have your vet take a look at it. If it is a parasite, they will be able to remove the parasite for you. They will also be able to get him on some antibiotics if needed. If it looks like a tumor, your vet will be able to see whether or not it needs to be surgically removed or just continued to watch. I hope this helps.

Vote icon

5Pet Parents found this answer helpful

Other Answers

  • Image profile

    Answered By Dr. Strydom, DVM

    Veterinarian

    Published on December 11th, 2023

    Hello, thank you for using Petco Pet Education Center, formerly Petcoach. This lump looks to be a tumor but I cannot be 100% sure just by looking at a photo. Other possibilities would be a cyst, an abscess, a local reaction to something like a tick bite. I suggest you take Amenti to your vet for an exam. Hope this helps. Best wishes.

    Vote icon

    1Pet Parents found this answer helpful

See More Answers

Related Questions

Petco Pet Education Center
Health & Wellbeing
What to do if my cat has a small hole with pus coming from its ear?
Is your cat's ear hole oozing pus? A Petco vet explains potential infections like abscesses from bites, advising immediate vet care, antibiotics, and recovery.
Updated on September 23, 2025
Petco Pet Education Center
Health & Wellbeing
My guinea pig has a growing lump on its neck. Can it heal itself?
Guinea pig has a growing, hard neck lump? Worried about vet costs? A certified veterinarian advises on crucial steps for diagnosis and your pet's well-being.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
My pet has a lump on their neck. What is it and what should I do?
Is your pet's lump a mystery? A licensed vet tech explains common causes like tumors or infections. Discover why a vet visit is crucial for diagnosis and treatment.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
My mouse has a growing lump. What can I do if I can't afford a vet?
Concerned about your mouse's growing lump and vet costs? A trusted Petco veterinarian provides guidance on managing her comfort during this difficult time.
Updated on December 04, 2025
Petco Pet Education Center
Health & Wellbeing
My pet has a soft lump. How long can I wait before seeing a vet?
Discovered a soft, nickel-sized lump on your pet's chest? A certified veterinarian offers expert advice on tracking changes and when to seek professional evaluation.
Updated on December 04, 2025
Petco Pet Education Center
Food & Nutrition
My cat is chunky. What food and steps can I take to help him lose weight?
Is your cat overweight? A certified vet offers guidance to help your tubby tabby lose weight. Get essential diet and food recommendations to slim down your cat!
Updated on September 23, 2025
image
Have A Vet Question?

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

Book Now

Sponsored