Greys and fox squirrels are not closely enough related, from a taxonomy standpoint, to interbreed. Its simply a color phase of the grey squirrel. We see that colorhere in NY from time to time.

Also, a frreze dryer knows when to remove the viscera through one of the "openings" thats already there, rather then cutting it. I used to take long needle nosed pliers and go through the "backdoor", no incision.