Steppinwolf...(interesting user-name)...Yes, we fed the greys, last year, on a regular basis. Besides putting out the household garbage, I started buying cheap dog food at the Dollar General store.
I would take a butter-bowl full of feed out to the garbage area, and shake the bowl, so the feed would rattle inside. After just a few times doing this, the females got wise, and began to listen for it. They would be at the feed by the time I got back to the edge of the house. Several times, they would be laying in the brush, waiting for the feed bowl. I would rattle it, and see one of them stand up, not 15 steps away. I have it on video, a couple of times.
It was fun to watch the females, as they would try to take food back to the den. If it was just dog food, they wouldn't attempt it, but lots of other kinds of food would be taken. One of the best was stale hamburger buns or biscuits. Momma would take all she could carry in her mouth, and carry it about 15 yards, then drop it and come back to get more. She would then carry the second mouthful to the first pile, drop it, and pick up the first, then on out of sight, to the den. In a minute or so, she would be back to get the 2nd load.
One of the funniest things I witnessed while watching these foxes, was when a stray cat wandered into my yard, one evening.
The cat was a big Tomcat, and he didn't belong here. A young boy was visiting us, and he and I were watching the foxes, that evening, from a bedroom window. Suddenly, one of the Mommas alerted, then took off at a run toward the lower end of the yard. Here comes the big Tomcat, unknowingly heading in the direction of the den, which was probably not over 50 yards outside the yard.
Momma Fox hit the cat at a dead run, bowled him over, then instantly was on top of him. The fur flew, for about 3 or 4 seconds!!! In that short time, Mr. Tomcat decided that this was not the place to be!!!
He left, at a high rate of speed, and we have never seen him again!!
We really enjoyed watching these animals, as they raised their young. We watched the pups from their first trip to the feed site with Momma, until they ventured to it on their own. We continued to see 2 or 3 foxes, during the winter. Then, this Spring, we didn't see much of them, but have seen a lot of the red fox.