“When you see a bear cub”
Freeze, find momma, and back away slowly keeping watch.
I have seen cubs in the woods, never got close enough to meet mom.
I’ve read where one is supposed to play dead with Grizzlies - the idea being they are just trying to eliminate the threat. Black bears are less apt to attack, but if they do it is to kill you - so those you fight back.
Although I imagine one’s instinct is to fight regardless of the color.