Marmots: WoW Battle Pets
Select a pet:

Pet Battle: [1-2] Mulgore; [1-3] Thunder Bluff; [3-4] Northern Barrens; [3-4] Westfall; [7-8] Arathi Highlands; [9-10] Southern Barrens; [18-19] Nagrand (Outland); [25] Nagrand (Draenor)
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.