You really need to post the link to that. There is a world of difference between a pug and a pitbull!
Here is the link to the story about the dog being 100 lbs
http://www.wjla.com/news/stories/0610/746319.html
Yes, there is, and the version of the story posted here is, I believe, totally bogus. Search on Google for "Marietta Robinson" and "pug", and you will see references only here on FR and one other "blog" about it being a pug. Do the same search except with "pit bull", and you get three pages worth of links. I also posted a picture from the video where they show a picture of the dog. If the dog was 100 lbs, then the picture had to be from when the dog was a puppy. In that case, you cant tell what breed it is.
For those reasons, I am calling this a BOGUS STORY. Not to say that the cops were not wrong, but because it had a glaring factual mistake which significantly changes the perception of the police officers judgement, which is, after all, what we are judging here.