Thank you for the advice about the puppy being with me at all times, Lloyd (the dog trainer) also recommended that, and that is what I have been doing. I brought Annie and Bailee to the park again today, and brought the little guy along with us... He had a lot of fun playing, and surprisingly him and Annie got a long better than they have been.

With the puppy, I just wanted to do basic stuff... It gives you a little better control over them while training when you use it and it also helps them not to pull on their collars while leash training, so I thought it would do really well with him.