A while back I kept wild caught ater chucks in with some very large hispidus chucks (>3 lbs.) They seemed to do fine together in their large outdoor cage. Apparently they can cross breed, but I never saw any mating activity in the year or so that they were housed together.

I think a nice female wild caught ater would do fine with your Calico male.

Sorry to hear you lost your female Calico. Do you keep your animals outdoors and did the animal die during hibernation. I also live in NV (LV area) and keep my animals outdoors.