This post is timely because in 2005 a man was killed by wolves in Saskatchetewan, the coroner recently ruled that wolves were the cause of death. First confirmed human death due to wolf attack in 100 years.
Read about it
here. I often carry bear spray or a firearm when in areas where bears are common. I once got too close to a pair of black bear cubs and was charged by the sow, by the time I got the bear spray out of my vest pocket, took off the holster and removed the double safety the bear could of mauled me for sure. She stopped short and then just escorted me out of the area as I backed away down the trail.
The biggest thing with bears is to keep a clean camp or yard with nothing to attract the bears to you.
Mike