I wasn't going to submit this because I mostly drew this for my self. I noticed my female Mice and Rats looked the same besides fromt the tail. so I decided to quickly make this referance sheet for me.
That explains the sloppy lineart (wasn't even planning on outlining)
I mostly wanted to upload this because if this may help me....maybe it might help others. maybe, it's not that good.
Well technically that impossible. I did a bunch of research looking for a hybrid mouse and rat and they're not actually able to breed. The cells dies quickly after impregnated or just doesn't reach the egg before sperm is killed.