OUTDOOR LIFE ARTICLE-same answer
"There’s no substitute for experience when it comes to judging by sight, and I have a lot to learn, but there is one surprisingly accurate way to size a bear if you can find a good track. If you measure the distance across the width of the front pad in the track in inches, then simply add 1, you will have a pretty good idea of what the bear will square in feet (the average of width & length of the hide). This seems far fetched, but it’s surprisingly accurate and virtually right-on with every bear I have measured. We measured my bear’s tracks at 8 ˝ inches across, and he was right at 9 feet 6 inches. So the next time you find some bear tracks, measure the width of the front pad. And if you’re fortunate enough to take that bear, I guarantee it will be right on."
http://www.outdoorlife.com/blogs/liv...and-size-bears