I was on a dirt road about 3 weeks ago, about 35 miles from nowhere. I was driving along side a pipeline with a powerline being installed on the other side of the road. A black cat ran across the road about 100 yards away. It was no doubt a cat and never saw a tail. My guess was because of it's size it was most likely a bobcat like you are asking about. I cannot say for sure as it was to quick to get a good look at though.