Agree, black and grizzly are different critters requiring different practices. I'd not take young kids into the backcountry where grizzly roam.

In California I'd be more concerned about mountain lions and would never allow young kids to stray when hiking and camping in their habitat (i.e., recent, reported sightings in the area). California black bears, even pesky Yosemite bears, are more a very large smelly pest than a true danger.

Cheers,
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--Rick