Petco Text Logo
Petco Pet Logo
  • Two Easy Ways to Start Earning Rewards!

    rewards header
    Become a member today!
    Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
    Petco Pay LogoBecome a credit card member today!

    Earn 2X Pals Rewards points at Petco
    when you use Petco Pay!

    APPLY NOW
    Learn More About Petco Pay Benefits

My 2-year-old hamster has a large, smelly tumor. What can I do?

Updated on September 23rd, 2025

Pet's info: Small Animal | Hamster | Female

My daughter hamster is 2 years old in March . Has a large lump bigger than 50 pence and looks lots of funny colours . And parts of the lump look open . And it smells . Took the hamster too the vet a week ago and she Said it was A Tumour . And if she gets worse they can put her too sleep ! Not sure what too do ?

1 Answer

Most Helpful Answer

Linda G,  MS, DVM

Answered By Linda G, MS, DVM

Veterinarian

Published on January 26th, 2019

Hello. Unfortunately, cancer in a 2 year old hamster is very common. If it smells , it means the tumor has probably outgrown its blood supply & the tissues are beginning to die. Unless you have the tumor removed, the kindest thing to do is euthanize Poppy. This will not get better on its own & will just continue to fester & smell worse. Poisons will get into her system making her sicker & sicker. I am so sorry, but this is a common thing to happen with hamsters. Thanks for using Petco Pet Education Center, formerly Petcoach.
Vote Icon1Pet Parents found this answer helpful

Smart Picks for Smart Questions

Have A Vet Question?

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

Share

Styled arrow button