I thought I'd pass this along as an interesting piece of info. I get feeds from the Cleveland Zoo on Facebook and one day saw this image on their feed:
They give the animals different toys to play with so as to keep their minds occupied. I asked how long it took the bear to get into the canister, and here was their response:
"Warren was unable to break through the plastic by "standing" on it. Biting through it took him several minutes -- it wasn't easy. He put several large holes in the container once he determined the right "bite angle." (Two years ago, we watched Warren figure out how to bite a coconut in half in a matter of seconds.)"
So it made me wonder - is this one smarter than average bear? Or are bear canisters ineffective against Grizzlies?