Diseased Critters: WoW Battle Pets
Select a pet:

Pet Battle: [3-6] Silverpine Forest; [3-6] Bloodmyst Isle; [6-7] Hillsbrad Foothills; [12-13] Eastern Plaguelands

Pet Battle: [3-6] Silverpine Forest; [3-6] Bloodmyst Isle; [6-7] Hillsbrad Foothills; [12-13] Eastern Plaguelands
TIP: You can filter pets in a wide variety of ways using the pet filters. You can even apply multiple filters to really zero in what you're seeking.