I think I found scientific proof that skunks are at the top of the food chain. I've seen bears attack wolves, mountain lions, elk and bison and win just about every time. I've never seen a bear successfully take down a skunk including this big guy that got schooled.
Since we live in Wyoming, I tend to come across a lot of bear videos and stories. There are few I've seen more inspiring than a rescued bear who had suffered from a badly broken jaw being set free again.