Here in the inter-mountain western U.S. we rarely see foxes... but we have our rude awakenings from time to time with their cousins the coyotes... a little larger than the fox, they to have a bushy tail, alert upright ears and are generally a very nervous animal... not one to corner with no route for escape. Most of the itme they are solitary and don't come around the house and barn because, I suspect, the barn dogs wouldn't brook such intrusion.
They do become bolder n occasion and one wants to keep the rifle handy...