I have put adult mice in, with adult ASFs for extensive periods of time with absolutely no troubles what-so-ever.

This is a very VEEEERY common practice.

I have also kept ASF rats with Spiny Mice with no problems as well.
ASFs can foster mouse pups very easily as well.


The ASFs can be housed with male mice, female mice, or both!

And yes, they're a type of mouse, not rat, but will not breed with domestic mice, or domestic rats.
Although, I've never heard of putting ASFs and domestic rats together, it could be possible. Easiest way to test it is to introduce one of them into the other's cage inside of a clear plastic exercise ball and see how they react.




I think the problems you guys are having, may be from not having tame ASFs, perhaps?
Mine are 100% tame, do not bite, and are very handleable animals, as well as my mice, and I've had no problems introducing one to the other at any age.