Kate, sorry to hear about your bite. I suffered a nasty bite to my lower right leg in august 2011 and I have still got a nasty scar. I'd wait till the scab is formed to start running cos as you say, they can't stitch dog bites cos of infection. I was warned against running till my scab formed in case sweat/mud/puddle water for in etc. I hope that this doesn't affect you in the future cos sadly I now have a real fear of loose dogs whilst out on running. Only a couple of months ago a large boundy dog ran towards me whilst I was running through a local country park. I completely over reacted, shouted and in doing so fell into a ditch and hurt my ankle! Have you been to the police about it?