I have the solution, for you to have one in a low level. Is not by a cheating way or another illegal way.
It's Simple, pupil me (http://aoavacalha.mybrute.com. This brute was pupiled from a brute with a bear. Now i know it will get a bear at level 5) and go to this site: http://brutetools.netii.net/english/simulateur.php
After fighting me you are able to predict how your brute will be in that site. (try predict your brute until the level 8, if your brute doesn't get a bear until that level, create another brute pupiling from aoavacalha. Do this until the prediction gets you a bear).
Pupil me: http://aoavacalha.mybrute.com