Re: make "Leave it" work outside as well as inside
When I teach "leave it" with an artical of food, the dog NEVER gets that artical of food. I use a better treat to praise and treat the dog. At the end, the "leave it" item is removed.
Outside with the pups, we do "Leave it" mostly when one is pooping and the other is getting ready to imbibe -- uhg! But a well-timed "LEAVE IT" works every time.
However, the back yard is fenced and they know that they cannot get to anything outside of the yard, so even if they are interested in my cat, I can easily call them off. However, if there was a free path to an animal, I do not think that it would work with the puppies yet.
My adults will stop and come back to me even if they are going after a rabbit or cat. (When we go from the car to the house, they are not leashed, and will come back at a word).
So how did we get from point A (reckless puppy) to point B (compliant adult). I don't know. Maybe regular training. Maybe a few well-timed corrections. Maybe just not allowing them off lead at all until I felt that the recall was solid.
My adults are not the same breeding as these pups. Dubya had strong prey drive. But Arwen is only mildly interested in outside critters. So the majority of my adults are somewhere in between there. I do not notice any prey drive in Rushie. It is just not apparent. So I would expect that Rushie and Babs' pups would not have that bad of prey drive. However, it sounds like Scarlett got her prey drive from Grampa Dubya.
My only suggestion to you is to load up on hot dogs. Nuke them if you think it will be cleaner. For the next two months, call Scarlett under every conceivable situation many, many times and give her a piece of hot dog every single time. Take it to a new level. Go outside with her on a long line and continue to call her when there is not a problem, praising and treating her. And then start calling her when she is going after prey.
The treats should continue until you can get her to come to you every single time no matter what is out there, then start a weaning process.
I think a plain "leave it" command does not do enough, especially since you are working without a fence and there is a busy street out there. By telling her to "Come" you are giving her an alternate command. Telling her to "Leave it" just says "don't bother that." She needs to be doing what you tell her in such a circumstance, either an emergency down, or a recall.
It may work, it may not. I like it better than taking her out on a prong and long line and administering a good correction if she fails to hear you when going after something.
Bear Cub, Hepsi-Pepsi
Cujo2, Karma Chameleon
Ramona the Pest, Kojak -- who loves you baby?
Tiny Tinnie, Susie's Uzzi, Kaiah -- The Baby Monster.