Two really good pets to level are any of the crocodiles from the fishing daily near Shattrath, and the Feline Familiar. Both of these pets have abilities that vary what type of damage they do. Thus making them very versatile for going up against other creatures. Chuck for example has Beast (great for leveling vs all those critters), undead, and water. He also has 2 abilities that heal, 1 beast and 1 undead.
Two really good pets to level are any of the crocodiles from the fishing daily near Shattrath, and the Feline Familiar. Both of these pets have abilities that vary what type of damage they do. Thus making them very versatile for going up against other creatures. Chuck for example has Beast (great for leveling vs all those critters), undead, and water. He also has 2 abilities that heal, 1 beast and 1 undead.