Attacks, here is a list of attacks and what happens when its not defeated or lead away.
Creature attacks, it depends on the creature that is attacking. I'll probably add it to there page. Also for these it is hiding that will save you. You can't fight them.
Bird attack, they can get some she-cat's pregnant.
Natural disasters, some can happen but not all of them and some are more rare than others.
You can suggest more if you want to.