Of course, I know more about my dogs than a trainer does. But that doesn't mean a trainer might not know better why a problem exists and how to best manage the problem.
A good trainer can look objectively on how you handle your dog. They can see body language that the dog is reacting to that we may not be aware of ourselves. And they are caught up in loving the dog, so they aren't trying to see everything in a light that makes ourselves or our dog look better.
A good trainer has to diagnose the problem between dog and handler and then they have to lay out a course of action that will address the problem that will work for both parties.
In a group class of people teaching a variety of commands, the trainer has to demonstrate how to get the dog to do each command, and watch the handlers fumble through it. Then they have to adjust the techniques to fit the handlers, and help the handlers get it right. The focus is on the handler, for the handler trains the dog, the handler lives with the dog, the handler knows the dog. And much of the time, any problems reside with the handler moreso than the dog.
Someone on their 1st pup might be wise to accept the trainer knows more than they do, and if they trust the trainer, to do what the trainer says within reason. Someone on their 4th dog might have a better knowledge base, and may realize that an approach that most dogs will respond favorably to, may be over-kill for their dog, and may even make things more difficult. Experience with a variety of dogs, or sufficient history with the dog in question is the only way to get there.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC