I DIDN'T NEED TO SAVE THE CAT MYSELF, AS THE DOG SAVED THE CAT. IT'S OBVIOUS. We had someone ready to stand in too incase the dog didn't save the cat. It was the safest way to deal with the situation.
My dog, Roxie (miniature labradoodle) saves the life of the cat from 2 doors down. A fox was initially threatening (staring at) the cat (pictures on my tumblr account). Roxie barks and scares the fox away.
My mum was the one who filmed it. Sorry she didn't zoom out or show the dog. I didn't film it because my video camera ran out of battery :(.
We had 3 people. 1 with the camera. 1 with the dog. 1 with nothing, ready to stand in to save our neighbour's cat.
There have been several cases of foxes killing cats in our area, so yes, it can happen. Rabies was eliminated from the UK in the 20th Century, and due to strict rules, has only risen a couple of times since. So the fox is not rabid.
My dog was definitely barking at the fox. She doesn't really care for the local cat, and she was staring directly at the fox, trying to free herself to get at it. We were pointing the fox, and not the cat, out to her too! RIP to Buster, the cat, who died shortly before the Christmas of 2012 :'(