Taurens are part of the original World of Warcraft races.
Original Races: Tauren, Human, Orc, Troll, Gnome, Night Elf, Undead (Forsaken), Dwarves.
Burning Crusade: Blood Elves and Dranei
Wrath of the Lich King: No New Races, but the Death Knight class was introduced.
Cataclysm: Will have Goblins (Horde) and Worgen (Alliance).
Yes, Pandaren were the new creatures introduced in the Mists of Pandaria expansion. They are a playable race that can be played as either Horde or Alliance.
Technically, the Pandaren from World of Warcraft were around before that movie came out. They were a joke on the part of Blizzard in Warcraft 3. They were going to be in World of Warcraft in the Burning Crusade, as the Alliance race, but that decision was changed to use the Draenei to go more in line with the expansion's Outland theme.
Class: Classy Race: Not Black
Undead.
25
You can do it with every race onlif you only have a lvl 55 with one race you just need WoLK expansion pack
Yes, the Night Elf race is an Alliance race. You do not need Burning Crusade to be a Night Elf. It is included with the "vanilla" version of World of Warcraft.
dependidng o what you like
the troll are the tallest race but they slouch so they don't seem to be the tallest but they are
In World of Warcraft, Worgen is a racial option that becomes available when you have the Cataclysm expansion installed and your account is upgraded to include Cataclysm. When you make a new character, Worgen and Goblin will then be options for you to choose as a race.
If with Cat you mean a Cat Druid, then yes you would have to play World of Warcraft. If you simply want to play a game with cats, there are plenty of pet-raising games around, and the online MMO Tera which is scheduled to be released in 2011 will feature the Popori race, which are cute anthropomorphic animals. I think what the asker meant was do you need World of Warcraft in order to play Cataclysm. If that was the question, then yes you do need the original World of Warcraft and also the Burning Crusade and Wrath of the Lich King expansion.
You have to create another character and choose to be a worgen or change your race to worgen if your class is compatible with that race.