It's kinda-sorta feasible (depending on your DM's flexibility) using published WOTC sources:
- Start with the Ranger variant on pg. 58 of Unearthed Arcana (loses Combat Style, gains Wildshape [small or medium animals only] and Fast Movement.)
- Replace the normal version of Wildshape with the Druid alternate class feature in the PHB2 (instead of small/medium only, the limitation is predator form-only.)
- Take levels of the Warshaper and Nature's Warrior prestige classes from CW.
You'd still (likely) be missing some desired elements, namely senses and claw attacks. You
could pick up low-light vision and scent. Low light vision can be had by choosing an appropriate race or with a 1st level feat. Scent is available through a couple of PrCs, but also as a Warblade stance (which I think would only take a 1 level dip.)
You're squarely in Homebrew land from there on out...
A kindhearted DM (if there
is such a creature

) might allow Nature's Warrior levels to improve your Wildshape to the point where you get the larger form with multiple attacks. Otherwise, maybe you could trade off spellcasting and/or Favored Enemy benefits to better your animal form.
Alternately, you could use the Druid as the base class, and take it to 8th level for the Ferocious Slayer form, maybe trading off spellcasting for the missing goodies... It'd also be a pretty fair trade if you sacrificed the aerial form for animal senses (and maybe some other minor benefit(s).)
Basically, you can get part way there with a mishmash of "official" choices, but it'd probably be more satisfying to create a custom base class using the published stuff as your jumping off point. And there shouldn't really be any balance issues, so long as you don't get
too carried away.

(And that's what the DM is for--- to slap you down and spoil your fun, right?
![Devious :] :]](http://www.enworld.org/forum/images/smilies/devious.png)
)