There is a number of other cool pet for example the flying snake like thingy where you can find in the barrens
White bear in Dun Murough
And if you are an NE , go to IF and tame the white leopard and go back to darkshore. Your pet will literally shine

You can also try looking for pets such as Owl which are only available at lower level and around lvl55

There are also a black lion in the barrens
and a cheetah around her vicinity too. Both are around level 20ish

There is a white lion which can only be tamed if you are horde because it spawns from horde quest only

White snake? I do rember them making snake untameable since long ago. Reason being snake is very very powerful or something like that.