That is the truth. A lot of folks have sent their dogs off to high priced trainers, when the fact is it's the PEOPLE who need training.
I have always trained my own dog, because I need the training more than she does! She's been bred for generations to hunt birds, bring them back, and watch her handler for every subtle command. I'm just a deskbound geek who likes to get out on the weekends . . .
Most people do need the training with their pets.
I have seen 4 pound dogs be the boss.
Nothing worse than a big dog than is not under control of a human.