Petco Text Logo
Petco Pet Logo

Why is my male dog aggressive towards my sick female dog with cancer?

Updated On September 23rd, 2025

I have my female and she was recently diagnosed with lymphoma and she is ten and my male has becoming increasingly aggressive towards her, what is up with this and i am concerned

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on August 4th, 2017

Unfortunately this is not unusual and it could happen as often dogs fail to show and read properly body language and facial expressions between each other when one of them is sick. Do not leave them unattended together as that could result in more and more aggression episodes. Unfortunately there is not much you can do a part from monitor them closely. Please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

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