Petco Text Logo
Petco Pet Logo

Why is my dog with lymphoma sick with a fever after treatment?

Updated On September 23rd, 2025

Pet's info: Dog | Beagle | Male | neutered | 4 years and 3 months old | 49 lbs

My dog is currently undergoing treatment for lympoma and had a treatment two mondays ago. He is sick with a fever. My question is do dogs with lymphoma get sick alot or is this the cancer coming back on him. Just an educated guess please

1 Answer

Most Helpful Answer

Image profile

Answered By Jessica Keay, DVM

Veterinarian

Published on October 3rd, 2019

I am sorry to hear about Walker! We can see fevers from cancer but we can also see fevers do to a secondary infection because the dog's immune system may be suppressed or not working as well when they are on chemotherapy or other drugs and so they may be more likely to get an infection elsewhere in their body. I would recommend letting your vet know about the fever. They may recommend testing such as bloodwork and urine testing to check for possible infections.

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

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

Sponsored