I don't think a black bear will bother you at all...
Unless you somehow get yourself in between her cubs...If you ever realize this then get out of there...if you stick around and let the situtation fester....maybe...just maybe....you could be in trouble....
Usually they just sniff your boots and run off....
However....the boars always like to look up at me and click their jaws at me and act all motcho.....I won't lie....makes the hair on your ____ stand up.