No, it's not a Russian domesticated fox. Those are silverish and have floppy ears due to domestication. I second your question: how/why do you have a fox? It looks magical.
This isn't necessarily the case - they have a wild variety of coat colours and markings, ear floppiness is variable. They tend to have slightly wider snoots than their wild cousins.
Couldn't upload videos here apparently, this is the best I could do.
Just a fox that ended up getting a little too much snacks from people at the manned gas station. She'd hang out around the door and after I gave her a sausage for the first time she seemed to get really comfortable with me. She'd walk up and (sometimes) let me pet her for a minute or two.