My hunters names correspond to what window they are in. I have 4 hunters, so the are named: Main, Upperleft, Upperright, and Lowerright. Because I have a 22" widescreen which runs one instance of wow, and a 20" on the right that runs 3 windows of wow. I had names, but I was always forgetting which pets were in which window. So when I see "Upperright" is low on health, I know to move my mouse to the upper right and click "Mend Pet".