Picked this up from 14ers.com. Enjoy!
I did get a valuable lesson on bears from a guy here at work that hikes a lot as well and is going to Yosemite this Year.
He said to tie bells on the backpack and carry pepper spray. According to him black bear scat has berry seeds and undigested nuts and small rodent hair in it and stinks.
Grizzly scat has bells in it and smells like pepper spray.