Tumours -- Why are they so common in rats?

The Rat Shack Forum

Help Support The Rat Shack Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

puffnstuff

Well-Known Member
Joined
May 7, 2010
Messages
112
Location
Toronto
Does anybody have any background info as to why tumours seem to be so common and aggressive in domestic rats?

We just lost our old girl Mustang to a uterine tumour (2 years old, so not really that old).

What I feel badly about is that there were no signs in advance. Early intervention might have extended her life. Everything was internal, and this awful thing must have been growing inside her and eating away at her for who knows how long. No apparent pain or discomfort, no change in behaviour. I wish she would have been able to tell us that something was wrong!

They said it was probably a very aggressive and fast growing tumour, and it ruptured causing massive blood loss. Perhaps the type that grows exponentially and the cells double each day. One day she was fine, next day she's showing signs of some sort of infection. Put her on antibiotics, and 2 days later a 3 cm huge bloody mass is hanging outside of her body. It's an image I don't think I will ever be able to forget. It could have grown so large that it took over every available space inside her, and then had nowhere to go but through the vaginal canal and outside. Odd thing is, there was no weight gain; a slight noticeable puffiness to her abdomen over the final 48 hours, but zero change in weight.

Anyway, I was totally blindsided by this.

As I scoured these boards last night looking for answers, I was surprised to find so many discussions about tumours and lumps. Seems to be very common, and almost expected when a rat reaches a certain age? Why is this? Is there something in the general gene pool that makes these pets so susceptible? Is it something in the diet? You'd think that with a hundred years or more of medical research using lab rats, that something like this would have been figured out by now.

Do any pet rats just pass away peacefully of old age? Why does it seem that most rats end up getting sick and requiring medical intervention? Not fair that these wonderful pets are susceptible to so many illnesses, and have such shortened lives. 24-36 months is not enough.

I guess I'm not really looking for answers to any of my philosophical questions. I'm just angry and upset that this happened, and that nobody saw any signs, and that even though we thought we did the right thing by seeking help, she could not be helped.
 
I've had only a handful of rats pass away peacefully of old age. Sometimes it seems that no matter what we do, they will go one way or another... despite all our best efforts. And then you get one like my Davis. Next Thursday we will be celebrating his 41 months. You count your blessings once your rat reaches 2.
 
Bad genetics I think!, with rat mills that supply pet stores, backyard breeders and people breeding on a whim I would say most rats don't have very good genetics and hence tumors and other lovely illnesses.

I've had 1 out of 8 that have died of old age.
 
Damn tumors!!! We can give them a clean environment, healthy food, exercise, happiness & love but it still seems the only thing we can be certain of making an impact on is the chances of mammary tumors by spaying the girls. I should check my records and make it simple, I never spayed my girls and mammary tumors ran rampant, til 6 of the last 7 were spayed and the only one to get them was the unspayed one, I saw plenty on the sites to learn that from others but that was my undeniable proof positive. I know you are referring not to mammary tumors but to other problems we can't guard against, but this is a good place for someone who wants others to know what a difference it really does make in the most likely destruction (apart from old-age respiratory trouble)to say so.
 
I think these illnesses are always in the back of our heads. We could never totally forget about them even if we wanted to.
 
So sorry for your loss :hugs:

We also had 1 out of many that only lasted to old age.

Many passed away from tumors(pts) and or a illness that was not curable(pts)

Me having mostly females even when i did rescue many started tumors at around 1 1/2 to 2 years old :cry4:
 
What a terrible sight that must have been, I'm so sorry you had to lose your lady that way.

I agree with everyone else. Genetics just aren't kind to rats. They've been mass produced to live a very short life as feeders for such a long time. I'm willing to bet that mills don't have rats beyond a certain age because the care they get is so minimal and improper, so they'd never notice a tumor or other illnesses [or care about it if they did].
 
puffnstuff said:
Do any pet rats just pass away peacefully of old age? Why does it seem that most rats end up getting sick and requiring medical intervention?
I don't think anything passes away peacefully of old age. Take a look at the human as an example, how many times have you heard of someone passing after a long battle with cancer, heart disease, kidney failure and after you say "OMG" you find out the person was 85!

Sorry for your loss, it must have been very difficult to handle. :hugs:
 
Besides bad genetics, one of the main things rats have been used for in lab testing is cancer. I have to wonder if that had something to do with it since our pet rats descend from those early lab rats.
 

Latest posts

Back
Top