You cannot view it because your tama has not died yet....once your tama dies and you restart then you can see history it will just show the tama that died of yours ..hope this helps.
yes,the only way to see history is if you had a tama die in your care. it shows all the tamas that were in your care and died. its better to not see it because it means you didnt took care of them to where they died
you can view it by when your tama dies...i recommened that you dont look at it when it is dead because that just means you didnt really care about your tama...