Scalese89 saidMy parents have an English Cocker Spaniel - male named Benny. He's just over two years old now and still behaves as badly as he did when he was much younger ...
I have had several Irish Setter, cant speak for other dogs but the Irish are not mature till about 4years old.
My current irish setter is an intelligent dog with an attention span in the milla seconds.
He forms bad habits easy. Recently i had to put a small mouse trap with a tissue over it in the kitchen garbage pale.
During the night he was opening the kitchen door and operating the foot pedal to open the lid and get at the trash out.