Breeding rats and mice in the same?

Today my friend told me that if I have a mouse colony in the same rack as my rat colony, the rats wouldn't breed because they smell the mouses scent. Is this true? :confused::confused:

it wasn't true in my case.. i just got rid of all my mice as they take too long to raise up and i needed the space for more rats but when i was breeding mice and rats, their cages were on top of each other, i use one of those plastic utility storage racks.

i breed rats and mice all in the same room very close to each other and i see no signs of them affecting each other.

I keep rats and ASF's all in the same room, they all breed fine.

Could be an illness like a virus etc that is keeping them from being fertile. Or, they just need new animals.

Oh. Ok. My friend doesn't breed any rats or mice. He just heard someone say that. So he told me because he knew I was gonna breed mice and rats on the same rack

I also breed both rats and mice in close proximity and haven't seen any adverse effects...

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Originally Posted by BallPython17

Today my friend told me that if I have a mouse colony in the same rack as my rat colony, the rats wouldn't breed because they smell the mouses scent. Is this true? :confused::confused:

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I've heard that before too from a rat breeder at a reptile show. I've never had any luck breeding mice and I thought it was because they were in the same area with the rats.

Good to know others haven't had a problem.:P

So this is a weird case.:confused:

I own both mice and rats, I haven't bred the rats yet but my mice produce a litter every 2 weeks just like always.