My dog is gentle and does not show any aggression except towards large trucks, buses, squirrels, rabbits, and joggers (not walkers). What should I do?

Hi.

I have a 1 year old Red Setter named Lexee. She is a very gentle dog and does not show any aggression except towards large trucks and buses when we are walking or riding in the car. She also does this with joggers passing us?not walkers. I think she is afraid of the noise from the tires and has developed a habit of lunging and barking at them. There has not been any negative incident in particular to cause this. (That I am aware of). It just started and I have not been able to stop this.

Lexee also wants to chase squirrels and rabbits- which I have been told is common with bird dogs.

Other than these 3 things- Lexee is a wonderful dog.

I would appreciate any advice or help you can give me to make walks more enjoyable. At this point, I am walking her in an area without squirrels, few joggers and little traffic.

We do try to practice the pack leader theory and constantly work on obedience commands. She also attended a puppy obedience class w/me that covered the sit-stay;-leave it,-come and heel on a leash areas.

Also- we are trying to train her with a remote Innotek collar so that we can run her in unfenced areas for exercise (play fetch). Do you recommend any collar in particular? Ours does not vibrate it has a warning signal, momentary and continuous shock with different settings. While we do not like to use the collar ?it is better than having our dog get away and get hit by a car.

Thank you for your time.
Donna