Dog Walking, Abby 2

Today I spent a full hour and a half working with Abby on walking. She already does well in a heal position as I stated in my last post but needs work on not pulling when she is allowed more freedom.
When I walk dogs I like to keep them in a heal position for most of the walk but I use the freedom of a longer leash to give rewards along the way by giving them more space and the opportunity to roam a little and sniff about more. Obviously if this is my general practice when walking dogs it is going to be the same when I walk Abby. Since I know that she does not always do so well with the limits of the reward time I started out by requiring her to stay in a heal position for a greater period of time. After establishing the rules of the heal position to a greater extent it was much easier to carry over the limits of the leash to the reward times. All I needed to do in the reward periods was give a small flick of my hand on my end of the leash and Abby would relax and release the tension on the leash. Another important part of this is that while I allow her the freedom of a longer leash the boundaries or clearly defined. As soon as the leash became taunt I flicked my hand because that was too far. I want a loose leash and that was as far away from me as Abby was allowed.
In addition to this the length of the reward period is important. As suggested by Cesar Millan, I only give five minutes of reward time roughly every fifteen minutes. This limits the chance that Abby will start to view the reward time as time when she is in charge and not me.
When I got done working with Abby today I gave her a rawhide bone as a reward for doing such a good job. This is when I discovered a problem in her behavior. Abby is very possessive of her rawhide bones. Since the bone I gave her was a large bone I took it away when she had eaten half of it. To my dismay she clenched it in her teeth, growled, and raised her hackles. I was able to take it when she settled down to start chewing on it again and set it down for a second but this is an issue that needs to be addressed differently from now on or it will most likely become worse.

Once again thank you too my readers and feel free to comment.