There has been a discussion on the German site some time ago where Margo showed very good examples for the bonitation codes
http://www.wolfdog.org/php/index.php...ewtopic&t=2200
The red line is a perfect mask (no code in the boniation code). The green one is M5 ( no good mask, the bonitation code shouldn´t be better than P3) . The lilac one means no mask M2 (shouldn´t get better than P5).
Some young dogs have M5 masks that become correct masks when they are older.
If you look at the offspring you will find that a M2 mask is quite dominant in heritage.
Regards Ina