Sounds like a panther. Ask your local game warden.
First of all welcome to the forums, We are told we do not have the cougar/panther here. They tell us we do not have wolves either tho. What I had seen clearly did not have a tail and was without a doubt a cat. So I am summing it up as a black bobcat. I was talking with a trapper that said he had never heard tell of a black bobcat but, then again never heard tell of an albino one either. He also knows I know wildlife when I see it, regardless of what it is...here is a photo of a surprised bobcat for you and the black one looked alot like this only running full tilt..