Hi everyone, I'm pretty new to this site, and dog training but looking forward to gaining from everyones experience! Here is my question; My family just got (about 3 weeks ago) a 2 year old GSD/Rotti mix named Sassy. She was doing decent enough at basic obedience, sit, down, stay, come, etc. But she is starting to pick and choose when she obeys and getting just plain sloppy about coming. I want to fine tune her obedience before I start any real trick training or agility training (the ultimate goal). So, How would you suggest I go about doing that? I've heaerd that when some people get a new dog that has been trained previously they re-train, so to speak, so the dog knows exactly how they want the command performed. That seems like a big ordeal to me. I am sold on marker training, and Sassy already responds to the mark. (I use the word 'yes' instead of a clicker) should I just mark and treat when she does it correctly and ignore when she doesn't? Also, which order should I work on the commands? Is one order better than another? thanks for any advice!