I'm not saying folks shouldn't be prepared, just saying that if X assaults and murders are committed in your county by humans, and .00001X by cougars, and .00000001X by bears, it sounds a little odd to say "what gun for cougars and bears?"
I'm honestly asking if the critters are anywhere near as much a problem as other humans (especially for folks not immediately engaged in hiking in forests). If human attacks outweigh animal attacks by the margin I assume they do, then it says interesting things about us culturally that lions, tigers, and bears (oh my) spring to mind rather than the mundane dangers of our fellow man.
Okay, googling up stats from CA Fish 'n' Game. California averages (1) cougar attack per year (counting injuries and fatalities), and less than (1) black bear attack per year.
In contrast, CA has 2,500 murders in 2005, and 114,000 aggravated assaults, presumably by OTL/B (other than lions/bears). (
http://www.disastercenter.com/crime/cacrime.htm ) Before anyone says "that's just L.A. gangbangers", I'll note that the hippie paradise of Mendocino county had 5 murders and 257 aggravated assaults in 2000. (
http://www.fedstats.gov/mapstats/crime/county/06045.html )
You're 1,250 times more likely to be killed by a human than a critter in CA. Not saying you should go ahead and pet the pointy kitty, just saying.
Does it matter to the one person a year who gets schwacked by a fuzzy? Dang betcha. Does it outweigh the dangers faced from other humans, traffic accidents, and heart disease? I vote no.
Sticking w/ my original recommendation of an 1892-type levergun. If I couldn't have an AR-15, I'd have one of those.
-MV