Why Do Bears Climb Trees?

To escape cats apparently! As another in an irregular series of strange animal related articles, I bring you a link to this story on the BBC News website, in which a black bear was twice chased up a tree by a 15lb housecat! I've heard of wolverines taking on bears before (even though bears are like 10 times the size of a wolverine) and winning, but this takes the piss frankly. My faith in bears being these awesome fierce creatures is shaken by this that's for sure. Have a read and have a laugh, I know I did.