Oh, man. So glad you were able to get away! Hope they find the dog/owner and verify that it's had its shots. And make sure that nothing like that happens again.

I'm pretty sure the ER has to report a dog bite. They do in Ohio.

Last time I was bit by a dog while riding, it didn't even break the skin, but left a deep hematoma in my calf muscle that took months to clear. Take care of those wounds.