Check with waterrat here. He has a couple and lives remotely on Lake Iliamna where they have lots of brown bears. The dogs do some amazing things.
Bernese Mountain dogs were mentioned by someone... they are a very sad excuse for a breed. The incredible health issues and early deaths added to the cost of buying one make them about the most expensive dog to own... and least useful.
I know nothing of the KBD's but remember that waterrat had posted about his in the past. He'd be the guy to talk to.
