Some concerns I have about starting ecollar training
How can you tell if the e-collar is for your dog, or not? Is it a straight forward thing? Will all dogs do well with it? And what can possibly go wrong? Like lets say I am careful and use Lou's methods tested and safe methods like Lou's, or go with a well recommended trainer. Is there a chance that the dog may not do well with it? And how would I know if its adversely affecting his temperament, etc? Would it be immediately apparent, or apparent over time, as in he gets spooked easily, is nervous, anxious, becomes aggressive etc?
Hope someone doesn't mind educating me. These are my fears , and as much as I feel an ecollar will help with recall and further training, I just cannot decide.