Drop to all fours to run as fast as a wild animal.
Running Wild is a worgenracial ability, treated by the game as a mount, but only worgen are eligible to learn it. This ability, only usable outdoors, causes the worgen to stretch onto all four legs, increasing movement speed by 60% at level 20-39, and by 100% faster at 40+.
Running Wild is indeed the new racial "mount" for worgen. Functionally the ability works exactly like a mount. This does mean the worgen are not bringing faction mounts to the table which other Alliance races can access. This is also of course very different from the original Plainsrunning implemented for taurens. We have no plans to try and bring that ability back in any form.
Ultimately, we feel Running Wild fits very well with the nature of the worgen race. Rather than getting a physical mount, they get down and sprint on all fours. When you're playing a worgen, it just feels awesome. :)
In some of the earler concepting the worgen were riding a boar-like mount jockingly called the man-bear-pig. But as they started to model it and take a closer look at how the worgen would looking riding their mount, the developer became inscreasingly dissatisfied. So they decided that runnning on all fours fits better for a worgen.
Hotfix (2010-12-13): "It is no longer possible to activate Running Wild from a transform or shapeshift form (including Metamorphosis). When leaving a shapeshift form, worgen players will always be in worgen form and cannot toggle Two Forms while shapeshifted."