Re: Multiple dogs...
I use the name differentiation, too, and it works really well. All of my girls know their names. I do a structured "name recognition" exercise (also known as attention training) where I reward them for looking at me when they hear their name, so that helps them learn their names quickly.
I use "just" as a command quite a bit, too, and that's been really effective. When I open a door, I'll say "just Trick!" and Trick will be the only one to come forward and go through the doorway. I can use it for toys or treats too - I'll reach out with a treat and say "just Khana" and Khana will be the only one to come forward for the treat. That way they're not doing behaviors just on their name alone (which is important if you're competing with your dogs - anticipating a command when you say the dog's name can cause you to fail an exercise). So I try to incorporate an actual command with the name and not just say the dog's name.
Melanie and the gang in Alaska
Positive 1ST! More reward, less correction makes a GREAT trainer.
Chows: Khana CD RE SD & Dora NA NAJ GSD: Tazer SDIT
Total of 2UDs 3CDXs 12CDs 2REs 8AgilityTitles 1BH Chow!
20 Yrs Training/Teaching Experience