tl;dr; Off-leash pitbull in Burnaby attacks and almost kills a small dog and bites her owner; pittbull's owner pulls a knife on the victim. If you recognize the people in the video - call the RCMP. Pass it around.
And please, let's not turn this thread into bashing of pittbulls.
// edit - more info on original incident: http://www.reddit.com/r/vancouver/co...near_boundary/
// edit - more pics: