This is a Data Broker version of my FuBar_PetFu plugin for FuBar. It works on both 2.4 live and the current WotLK beta. I recommend Fortress but any data broker information addon should work.
This plugin displays pet name, level and (if you're a hunter) XP's.
It works for Hunters, Warlocks and Death Knights.
The tooltip shows other handy pet information based on class and pet type.
There are toggles for sections of the text, explained in the tooltip.
1.2 - Removed pet happiness and XP code, cleaned up the display based on this.
Updated to 4.0.1
1.1 - Fixed pet's diet display and stabled pet info.