As much as I love being taken by surprise from behind while running, and being bit on my thigh by your lovely mutt, I must ask that you keep your dogs on a leash or behind a fence.
Also, not to be a negative Nancy or anything, but could you also make sure your dog doesn't follow me during my run? I love a running mate...just one that I don't have to yell at and say, "Go home! Go on now!" *pointing away* at the end of my run.