Created by the GKick Network, the Global Pet Battle League is the first competitive WoW Pet Battle tournament. GKick explains the GPBL as follows:
Here's how you can participate:
1.) Visit the Global Pet Battle League website for all necessary info.
2.) Be sure to read the RULES page in detail and make sure you can be available for the Qualification and Tournament dates listed on the main page.
3.) Once you understand the rules, click the "Register" link (top navigation) to enter your info and sign up.
Once we've received your registration, you'll be notified of the start time for qualification play (if necessary) and your seeding in the tournament bracket itself.
Official start times will be announced in December and sent to all registered participants. From there, all you need to do is show up with your roster of level 25 pets and get ready to battle!