Bear Canister Questions

I'm new to the Daks and have read about Yellow Yellow and getting into bear canisters. I just have some questions on this. I read bits and pieces over time but wanted more on the story. Was Yellow Yellow the only bear to get into the canisters or were her offspring doing it as well? Was it other bears in the region as well? Did this happen many times or just a one time deal? I'm curious because Yellow Yellow was referenced on a different forum about bear canisters an I'd like to know the history with it.


Thanks for any details.