The photos I have seen of foxes that have been mauled by dogs, they have been in a much worse state. Perhaps that is just animal rights people showing the most gruesome ones.
I would hazard a guess that these three have possibly been caught by gun and dog. A gun dog is a lot cleaner than a fox hound, rather than maul it to death they are more like a big-cat, a good sharp bite to the neck. After all, gun dogs are often used with things you want to eat... who wants to eat something the dog has ripped to shreds!
Poor little bu**ers anway, we are very fortunate to be top of the foodchain (in this country anyway!). Just seems like such a waste to kill things with no intention of making good come of it. I know they are a pest but they are very handsome-looking pests.