http://www.bbc.co.uk/news/world-us-canada-27407932
It is only 34 seconds long, but you may not believe this little video (yet it happened). A neighbour's dog attacks a 4-year old boy, then his cat fights off the dog. Just astonishing.
I've been trying to find the way to embed it within this email, but it is flash, and I cannot, so you will need an internet connection (try your local library).
--------- Alex Kemp