This is all over the internet right now.  A little boy is playing outside his house – a neighbor’s dog is loose and attacks the little boy.  The kid’s cat comes flying out of nowhere and chases off the dog!  The family’s home video surveillance system catches it all:

It is a happy ending, but the boy was bitten and required stitches – mom apparently was also bitten. It could have been much worse.  That is one awesome cat!