Totally putting aside the issue of farming bear bile...
The mother bear could have also been fucking crazy and decided to kill her cub and run into a wall. Just saying...
Jesus, can't believe only one person has pointed this out in the thread.
If a bear has a discomfort or pain in its stomach, why would it not hit it out of anger/frustration? This doesn't mean it's trying to kill itself.
Also, a bear is a wild animal, why would it not just randomly freak the fuck out as Ischmidt pointed out above?
The treatment is disgusting, hate to read about this. I just don't think they're that intelligent. Apes and dolphins are usually considered as some of the most intelligent animals and even these tend to act very rashly out of nothing.