#10 Puppies of adolescence require special patience.

#11 From five months on, the character begins to deteriorate. The animal becomes virtually uncontrollable, refuses to do anything, is intolerant of children, gnaws at pieces of furniture.

#12 You cannot leave everything unattended and wait for the end of the adolescent period. It is necessary to approach education with a vengeance, as persistently as possible demanding the execution of orders.
