Petco Text Logo
Petco Pet Logo

How do I know when to put down my dog with metastatic cancer?

Updated On September 23rd, 2025

Pet's info: Dog | Border Collie | Female | unspayed | 13 years and 9 months old

Our dog has mastesized breast cancer. When will I know its time to put her down? I don't want to wait till she's crying in pain.

1 Answer

Most Helpful Answer

Image profile

Answered By David Elbeze, DVM, MRCVS

Veterinarian

Published on November 28th, 2016

Pain is not always a factor in these condition, common places where those tumors like to go are the lungs, the liver and the brain, in case of the lung you will start seeing respiratory distress, in case of the brain you will see neurological signs and seizures. It's very different from case to case and it's difficult to know when the right time will be, but when the time comes you will probably know.

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